Tech News - Programming

Yesterday, the team behind Dark programming language has unveiled Darklang’s private beta version. Dark is a holistic programming language, editor, and infrastructure for building backends. Developers can write in the Dark language, using the Dark editor, and the program is hosted on Dark’s infrastructure. As a result, they can code without thinking about infrastructure, and have safe instant deployment, which the team is calling “deployless” development. According to the team, backends today are too complicated to build and they have designed Dark in a way to reduce that complexity. Ellen Chisa, CEO of the Dark says, “Today we’re releasing two videos showing how Dark works. And demonstrate how to build a backend application (an office sign-in app) in 10 minutes.” Paul Biggar, the CTO also talks about the Dark’s philosophy and the details of the language, the editor and the infrastructure. He also shows how they make “deployless” safe with feature flags and versioning, and how Dark allows to introspect and debug live requests. Alpha users of Darklang build backends for web and mobile applications The Dark team says that during the private alpha, developers have built entire backends in Dark. Chase Olivieri built Altitude, a flight deal subscription site. Julius Tarng moved the backend of Tokimeki Unfollow to Dark for scalability. Jessica Greenwalt & Pixelkeet ported Birb, their internal project tracker, into a SaaS for other design studios to use. The team has also seem alpha users build backends for web and mobile applications, internal tools, Slackbots, Alexa skills, and personal projects. And they’ve even started building parts of Dark in Dark, including their presence service and large parts of the signup flow. Additionally, the team will let you in the private beta of Darklang immediately if the developers have their project well-scoped and ready to get started. Community unhappy with private version, and expect open-source On Hacker News, users are discussing that in this time and age if there is any new programming language, it has to be open-source. One of them commented, “Is there an open source version of the language? ...bc I'm not touching a programming language with a ten foot pole if it hasn't got at least two implementations, and at least one open source :| Sure, keep the IDEs and deployless infrastructure and all proprietary, but a core programming language in 2019 can only be open-source. Heck, even Microsoft gets it now.” Another one says, “They are 'allowing' people into a private beta of a programming language? Coupled with the fact it is not open source and has a bunch of fad ad-tech videos on the front page this is so many red flags.” While others compare Dark with different programming languages, mainly Apex, Rust and Go. A user comment reads, “I see a lot of Parse comparisons, but for me this is way more like Force.com from Salesforce and the Apex language. Proprietary language (Apex, which is Java 6-ish), complete vertical integration, no open source spec or implementation.” Another one says, “Go - OK, it has one implementation (open-source), but it's backed by one big player (Google) and used by many others... also the simplicity at core design decisions sound like the kind of choices that would make an alternative compiler easier to implement than for other languages Rust - pretty fast growing open-source community despite only one implementation... but yeah I'm sort of worried that Rust is a "hard to implement" kind of language with maybe a not high enough bus factor... similar worries for Julia too But tbh I'm not drawn much to either Go and Rust for other reasons - Go is too verbose for my taste, no way to write denser code that highlights the logic instead of the plumbing, and it has a "dumb" type system, Rust seems a really bad choice for rapid prototyping and iteration which is what I care about now.” Other interesting news in programming this week Introducing ‘ixy’, a simple user-space network driver written in high-level languages like Rust, Go, and C#, among others TextMate 2.0, the text editor for macOS releases GNU community announces ‘Parallel GCC’ for parallelism in real-world compilers

Back in July 2010, Graydon Hoare showcased the Rust programming language for the very first time at Mozilla Annual Summit. Rust is an open-source system programming language that was created with speed, memory safety, and parallelism in mind. Looking at Rust’s memory and thread safety guarantees, a supportive community, a quickly evolving toolchain, many major projects are being rewritten in Rust. And, one of the major ones was Servo, an HTML rendering engine that will eventually replace Firefox’s rendering engine. Mozilla is also using Rust for rewriting many other key parts of Firefox under Project Quantum. Fastly chose Rust to implement Lucet, its native WebAssembly compiler and runtime. More recently, Facebook also chose Rust to implement its controversial Libra blockchain. As the 9th anniversary of the day when Hoare first presented Rust in front of a large audience is approaching, The New Stack took a very interesting interview with him. In the interview, he talked about the current state of system programming, how safe he considers our current complex systems are, how they can be made safer, and more. Here are the key highlights from the interview: Hoare on a brief history of Rust Hoare started working on Rust as a side-project in 2006. Mozilla, his employer at that time, got interested in the project and provided him a team of engineers to help him in the further development of the language. In 2013, he experienced burnout and decided to step down as a technical lead. After working on some less-time-sensitive projects, he quit Mozilla and worked for the payment network, Stellar. In 2016, he got a call from Apple to work on the Swift programming language. Rust is now being developed by the core teams and an active community of volunteer coders. This programming language that he once described as “spare-time kinda thing” is being used by many developers to create a wide range of new software applications from operating systems to simulation engines for virtual reality. It was also "the most loved programming language" in the Stack Overflow Developer Survey for four years in a row (2016-2019). Hoare was very humble about the hard work and dedication he has put into creating the Rust programming language. When asked to summarize Rust’s history he simply said that “we got lucky”.  He added, “that Mozilla was willing to fund such a project for so long; that Apple, Google, and others had funded so much work on LLVM beforehand that we could leverage; that so many talented people in academia, industry and just milling about on the internet were willing to volunteer to help out.” The current state of system programming and safety Hoare considers the state of system programming language “healthy” as compared to the starting couple of decades in his career. Now, it is far easier to sell a language that is focused on performance and correctness. We are seeing more good languages coming into the market because of the increasing interaction between academia and industry. When asked about safety, Hoare believes that though we are slowly taking steps towards better safety, the overall situation is not getting better. He attributes building a number of new complex computing systems is making it worse. He said, “complexity beyond comprehension means we often can’t even define safety, much less build mechanisms that enforce it.” Another reason according to him is the huge number of vulnerable software present in the field that can be exploited anytime by a bad actor. For instance, on Tuesday, a zero-day vulnerability was fixed in Firefox that was being “exploited in the wild” by attackers. “Like much of the legacy of the 20th century, there’s just a tremendous mess in software that’s going to take generations to clean up, assuming humanity even survives that long,” he adds. How system programming can be made safer Hoare designed Rust with safety in mind. Its rich type system and ownership model ensures memory and thread safety. However, he suggests that we can do a lot better when it comes to safety in system programming. He listed a bunch of new improvements that we can implement, “information flow control systems, effect systems, refinement types, liquid types, transaction systems, consistency systems, session types, unit checking, verified compilers and linkers, dependent types.” Hoare believes that there are already many features suggested by academia. The main challenge for us is to implement these features “in a balanced, niche-adapted language that’s palatable enough to industrial programmers to be adopted and used.” You can read Hoare’s full interview on The New Stack. Rust 1.35.0 released Rust shares roadmap for 2019 Rust 1.34 releases with alternative cargo registries, stabilized TryFrom and TryInto, and more

Yesterday, the PHP development team announced the availability of PHP version 7.4. This marks the fourth feature update to the PHP 7 series. PHP 7.4 comes with numerous improvements and new features. Key features in PHP 7.4 Class properties support type declarations. Starting from PHP 7.4, arrow functions will provide a shorthand syntax for defining functions with implicit by-value scope binding The full variance support is only available if autoloading is used by the user. Also, a single file will now only support non-cyclic type references. Numeric literals can contain underscores between digits. Weak references in PHP 7.4 will allow the programmers to retain a reference to an object that does not prevent the object from being destroyed. Users can now throw exceptions from __toString(). This was previously not permitted in PHP as it used to result in a fatal error. The CURLFile now supports stream wrappers in addition to plain file names. The FILTER_VALIDATE_FLOAT filter will support the min_range and max_range options, with the same semantics as FILTER_VALIDATE_INT. A new FFI extension is introduced. It will provide a simple way to call native functions, access native variables, and create/access data structures defined in C libraries. A new IMG_FILTER_SCATTER image filter is added to introduce a scatter filter to images. Read More: The Union Types 2.0 proposal gets a go-ahead for PHP 8.0 Users are happy with the new features in PHP 7.4 release. https://twitter.com/heiglandreas/status/1199989039249678337 To know the full list of changes, head over to the PHP archive page. Users can also check out the PHP manual to learn how to migrate from PHP 7.3.x to PHP 7.4.x. PEAR’s (PHP Extension and Application Repository) web server disabled due to a security breach Symfony leaves PHP-FIG, the framework interoperability group Google App Engine standard environment (beta) now includes PHP 7.2 Redox OS will soon permanently run rustc, the compiler for the Rust programming language, says Redox creator Jeremy Soller Homebrew 2.2 releases with support for macOS Catalina

.NET Core 3.0 was announced in May this year, it adds support for building desktop applications using WinForms, WPF, and Entity Framework 6. Updates to .NET Framework were also announced which enable use of new modern controls from UWP in existing WinForms and WPF applications. Now, more details are out on both of them. .NET Core 3.0 .NET Core 3.0 addresses three scenarios asked by the .NET framework developer community. Multiple versions of .NET on the same machine As of now, only one version of .NET Framework can be installed on a machine. An update to the .NET Framework poses a risk of a security fix, bug fix, or new API breaking applications on the machine. Now Microsoft aims to solve this problem by allowing multiple versions of .NET Core  to reside on one machine. The applications that need to be stable can be locked to one of the stable versions then later on be moved to use the newer version as it is ready. Embedding .NET directly into an application Since there can only be one version of .NET Framework on a machine, to take advantage of the latest framework or language features, the newer version needs to be installed. With .NET Core, you can now ship the framework as a part of an application. This enables developers to take advantage of the new features of the latest version without having to wait for the framework to install. Taking advantage of .NET Core features The side-by-side nature of .NET enables introduction of new innovative APIs and Base Class Library (BCL) improvements without the risk of breaking compatibility. WinForms and WPF applications on Windows can now take advantage of the latest .NET Core features. These features include more fundamental fixes for a better high-DPI support. .NET Framework 4.8 .NET Framework 4.8 also addresses three scenarios asked for by the .NET Framework developer community. Modern browser and media controls .NET desktop applications use the Internet Explorer and Windows Media Player for displaying HTML and playing media files. These legacy controls don’t show the latest HTML or play the latest media files. Hence, Microsoft is adding new controls to advantage of Microsoft Edge and newer media players thereby supporting the latest standards. Access to touch and UWP Controls The Universal Windows Platform (UWP) contains new controls to take advantage of the latest Windows features and the devices with touch displays. The code in your application does not have to be rewritten to use these new features and controls. Microsoft is going to make them available to WinForms and WPF enabling the developers to take advantage of these new features in the existing code of applications created. Improvements for high DPI The standard resolution of computer displays is steadily becoming 4K and now even 8K resolutions are available. WIth the newer versions WinForms and WPF applications will look great on these high resolution displays. The future of .NET .NET Framework is installed over one billion machines, hence even a security fix introducing a bug will affect a lot of devices. .NET Core is a fast-moving version of .NET. Because of its side-by-side nature it can take changes that can prove very risky in .NET Framework. Meaning, .NET Core is bound to get new APIs and language features over time that .NET Framework cannot. If your existing applications are on .NET Framework, there is no immediate need to move to .NET Core. For more details, visit the Microsoft Blog. .NET Core 2.0 reaches end of life, no longer supported by Microsoft .NET announcements: Preview 2 of .NET Core 2.2 and Entity Framework Core 2.2, C# 7.3, and ML.NET 0.5 Microsoft’s .NET Core 2.1 now powers Bing.com

Last week, researchers from USA and China released a paper titled ESPRESSO: A fast end-to-end neural speech recognition toolkit. In the paper, the researchers have introduced ESPRESSO, an open-source, modular, end-to-end neural automatic speech recognition (ASR) toolkit. This toolkit is based on PyTorch library and FAIRSEQ, the neural machine translation toolkit. This toolkit supports distributed training across GPUs and computing nodes and decoding approaches that are commonly employed in ASR such as look-ahead word-based language model fusion. ESPRESSO is 4 to 11 times faster for decoding than similar systems like ESPNET and it achieves state-of-the-art ASR performance on data sets such as LibriSpeech, WSJ, and Switchboard. Limitations of ESPnet  ESPnet, an end-to-end speech processing toolkit, has some limitations: The code ESPnet is not easily extensible and also has issues related to portability due to its mixed dependency on PyTorch and Chainer, the deep learning frameworks. It uses a decoder which is based on a slow beam search algorithm that is not fast enough for quick turnaround of experiments. To address the above problems, the researchers introduced ESPRESSO. With ESPRESSO it is possible to plug new modules into the system by extending standard PyTorch interfaces.  The research paper reads, “We envision that ESPRESSO could become the foundation for unified speech + text processing systems, and pave the way for future end-to-end speech translation (ST) and text-to-speech synthesis (TTS) systems, ultimately facilitating greater synergy between the ASR and NLP research communities.” ESPRESSO is built on design goals The researchers implemented ESPRESSO based on certain design goals in mind. Firstly, they made use of pure Python / PyTorch for enabling modularity and extensibility. To speed up the experiments, the researchers implemented parallelization, distributed training and decoding. They achieved compatibility with Kaldi / ESPNET data format in order to reuse previous / proven data preparation pipelines. They made ESPRESSO exhibit interoperability with the existing FAIRSEQ codebase in order to make future joint research areas between speech and NLP, easy. ESPRESSO’s dataset classes The speech data for ESPRESSO follows the format in Kaldi, a speech recognition toolkit where utterances get stored in the Kaldi-defined SCP format. The researchers have followed ESPNET and have used the 80-dimensional log Mel feature along with the additional pitch features (83 dimensions for each frame).  ESPRESSO also follows FAIRSEQ’s concept of “datasets” that contains a set of training samples and abstracts. Based on the same concept, the researchers have created dataset classes in ESPRESSO: data.ScpCachedDataset This dataset contains the real-valued acoustic features that are extracted from the speech utterance. The training batch that is drawn from this dataset is a real-valued tensor of shape [BatchSize × TimeFrameLength × FeatureDims] and it will be fed to the neural speech encoder. As the acoustic features are large and they cannot be loaded into memory all at once, the researchers also implement sharded loading where bulk of features are pre-loaded once the previous bulk is consumed for training/decoding. This also balances the file system’s I/O load as well as memory usage. data.TokenTextDataset This dataset contains the gold speech transcripts as text where the training batches are an integer-valued tensor of shape [BatchSize × SequenceLength]. data.SpeechDataset data.SpeechDataset is a container for the above-mentioned datasets. The samples drawn from this dataset contain two fields including source and target and points to the speech utterance and gold transcripts respectively.  Achieving state-of-the-art ASR performance on LibriSpeech, WSJ, and Switchboard datasets ESPRESSO provides running recipes for a variety of data sets. The researchers have given details about their recipes on Wall Street Journal (WSJ), an 80-hour English newspaper speech corpus, Switchboard (SWBD), a 300-hour English telephone speech corpus and LibriSpeecha corpus which is of approximately 1,000 hours of English speech.  The data sets for ESPRESSO have their own extra text corpus that is used for training language models. These are models are optimized using Adam, a method used for stochastic optimization, with an initial learning rate 10−3. This rate is halved if the metric on the validation set at the end of an epoch does not show an improvement over the previous epoch. In case, the learning rate is less than 10−5, Also the training process stops.  Curriculum learning is used for LibriSpeech or WSJ / SWBD epochs, as it prevents training divergence and improves performance. NVIDIA GeForce GTX 1080 Ti GPUs is used for training/evaluating the models. In this paper, all the models are trained with 2 GPUs by using FAIRSEQ built-in distributed data parallellism.  To conclude, the researchers have presented ESPRESSO toolkit in this paper and has provided ASR recipes for LibriSpeech, WSJ, and Switchboard datasets. The paper reads, “By sharing the underlying infrastructure with FAIRSEQ, we hope ESPRESSO will facilitate future joint research in speech and natural language processing, especially in sequence transduction tasks such as speech translation and speech synthesis.” To know more about ESPRESSO in detail, check out the paper. Other interesting news in programming Nim 1.0 releases with improved library, backward compatibility and more Dgraph releases Ristretto, a fast, concurrent and memory-bound Go cache library .NET Core 3.0 is now available with C# 8, F# 4.7, ASP.NET Core 3.0 and general availability of EF Core 3.0 and EF 6.3

Yesterday, at the ongoing .NET Conference 2019, NET Core 3.0 was released along with ASP.NET Core 3.0 and Blazor updates. C#8 and F# 4.7 is also a part of this release. Entity Framework Core 3.0 and Entity Framework 6.3 are now generally available. What’s new in .NET Core 3.0 .NET Core 3.0 now includes adding Windows Forms and WPF (Windows Presentation Foundation), adding new JSON APIs, support for ARM64, and improving performance across the board. Here are the key highlights: Support for Windows Desktop apps .NET Core supports Windows Desktop apps for both Windows Forms and WPF (and open source). The WPF designer is part of Visual Studio 2019 16.3, which was also released yesterday. This includes new templates and an updated XAML designer and XAML Hot Reload. The Windows Forms designer is still in preview and available as a VSIX download. Support for C# 8 and F# 4.7 C# 8 was released last week and adds async streams, range/index, more patterns, and nullable reference types. F# 4.7 was released in parallel to .NET Core 3.0 with a focus on infrastructural changes to the compiler and core library and some relaxations on previously onerous syntax requirements. It also includes support for LangVersion and ships with nameof and opening of static classes in preview. Read Also: Getting started with F# for .Net Core application development [Tutorial] .NET Core apps now have executables by default This means apps can now be launched with an app-specific executable, like myapp or ./myapp, depending on the operating system. Support for new JSON APIs High-performance JSON APIs have been added, for reader/writer, object model, and serialization scenarios. These APIs minimize allocations, resulting in faster performance, and much less work for the garbage collector. Support for Raspberry Pi and Linux ARM64 chips These chips enable IoT development with the remote Visual Studio debugger. You can deploy apps that listen to sensors, and print messages or images on a display, all using the new GPIO APIs. ASP.NET can be used to expose data as an API or as a site that enables configuring an IoT device. Read Also: .NET Core 3.0 Preview 6 is available, packed with updates to compiling assemblies. .NET Core 3.0 is a ‘current’ release and will be available with RHEL 8. It will be superseded by .NET Core 3.1, targeted for November 2019. If you're on .NET Core 2.2 you have until the end of the year to update to 3.1, which will be LTS. You can read a detailed report of all .NET Core 3.0 features. What's new in ASP.NET Core 3.0 ASP.NET Core 3.0 is also released in parallel to .NET Core for building web apps. Notably, ASP.NET Core 3.0 has Blazor, a new framework in ASP.NET Core for building interactive client-side web UI with .NET. With Blazor, you can create rich interactive UIs using C# instead of JavaScript. You can also share server-side and client-side app logic written in .NET. Blazor renders the UI as HTML and CSS for wide browser support, including mobile browsers. Other updates in ASP.NET Core 3.0: You can now create high-performance backend services with gRPC. SignalR now has support for automatic reconnection and client-to-server streaming. Endpoint routing integrated through the framework. HTTP/2 now enabled by default in Kestrel. Authentication support for Web APIs and single-page apps integrated with IdentityServer Support for certificate and Kerberos authentication. New generic host sets up common hosting services like dependency injection (DI), configuration, and logging. New Worker Service template for building long-running services. For a full list of features, visit Microsoft Docs. Entity Framework Core 3.0 and Entity Framework 6.3 are now generally available with C# 8 As a part of the .NET Core 3.0 release, Entity Framework Core 3.0 and Entity Framework 6.3 are now generally available on nuget.org. New updates in EF Core 3.0 include: Newly architectured LINQ provider to translate more query patterns into SQL, generating efficient queries in more cases, and preventing inefficient queries from going undetected. Cosmos DB support to help developers familiar with the EF programming model to easily target Azure Cosmos DB as an application database. EF 6.3 brings the following new improvements to the table: With support for .NET Core 3.0, the EF 6.3 runtime package now targets .NET Standard 2.1 in addition to .NET Framework 4.0 and 4.5. Support for SQL Server hierarchyid Improved compatibility with Roslyn and NuGet PackageReference Added the ef6.exe utility for enabling, adding, scripting, and applying migrations from assemblies. This replaces migrate.exe .NET Core 3.0 is a major new release of .NET Core. Developers have widely appreciated the announcement. https://twitter.com/dotMorten/status/1176172319598759938 https://twitter.com/robertmclaws/status/1176206536546357248 https://twitter.com/JaypalPachore/status/1176200191021473792 Interested developers can start updating their existing projects to target .NET Core 3.0. The release is compatible with earlier .NET Core versions which makes updating easier. Other interesting news in Tech Introducing Weld, a runtime written in Rust and LLVM for cross-library optimizations. Chrome 78 beta brings the CSS Properties and Values API, the native File Systems API and more. LLVM 9 releases with official RISC-V target support, asm goto, Clang 9 and more.

Two days ago, Jeremy Soller, the Redox OS BDFL (Benevolent dictator for life) shared recent developments in Redox which is a Unix-like operating system written in Rust. The Redox OS team is pretty close to running rustc, the compiler for the Rust programming language on Redox. However, dynamic libraries are a remaining area that needs to be improved. https://twitter.com/redox_os/status/1199883423797481473 Redox is a Unix-like Operating System written in Rust, aiming to bring the innovations of Rust to a modern microkernel and full set of applications. In March this year, Redox OS 0.50 was released with support for Cairo, Pixman, and other libraries and packages. Ongoing developments in Redox OS Soller says that he has been running the Redox OS on a System76 Galago Pro (galp3-c) along with the System76 Open Firmware and has found the work satisfactory till now. “My work on real hardware has improved drivers and services, added HiDPI support to a number of applications, and spawned the creation of new projects such as pkgar to make it easier to install Redox from a live disk,” quotes Soller in the official Redox OS news page. Furthermore, he notified users that Redox has also become easier to cross-compile since the redoxer tool can now build, run, and test. It can also automatically manage a Redox toolchain and run executables for Redox inside of a container on demand. However, “compilation of Rust binaries on Redox OS”, is one of the long-standing issues in Redox OS, that has garnered much attention for the longest time. According to Soller, through the excellent work done by ids1024, a member of the GSoC Project, Readox OS had almost achieved self-hosting. Later, the creation of the relibc (a C library written in Rust) library and the subsequent work done by the contributors of this project led to the development of the POSIX C compatibility library. This gave rise to a significant increase in the number of available packages. With a large number of Rust crates suddenly gaining Redox OS support, “it seemed that as though the dream of self-hosting would soon be reality”, however, after finding some errors in relibc, Soller realized, “rustc is no longer capable of running statically linked!”  Read More: Rust 1.39 releases with stable version of async-await syntax, better ergonomics for match guards, attributes on function parameters, and more Finally, the team shifted its focus to relibc’s ld_so which provides dynamic linking support for executables. However, this has caused a temporary halt to porting rustc to Redox OS. Building Redox OS on Redox OS is one of the highest priorities of the Redox OS project. Soller has assured its users that Rustc is a few months away from being run permanently. He also adds that with Redox OS being a microkernel, it is possible that even the driver level could be recompiled and respawned without downtime, which will make the operating system exceedingly fast to develop. In the coming months, he will be working on increasing the efficiency of porting more software and tackling more hardware support issues. Eventually, Soller hopes that he will be able to successfully develop Redox OS which would be a fully self-hosted, microkernel operating system written in Rust. Users are excited about the new developments in Redox OS and have thanked Soller for it. One Redditor commented, “I cannot tell you how excited I am to see the development of an operating system with greater safety guarantees and how much I wish to dual boot with it when it is stable enough to use daily.” Another Redditor says, “This is great! Love seeing updates to this project 👍” https://twitter.com/flukejones/status/1200225781760196609 Head over to the official Redox OS news page for more details. AWS will be sponsoring the Rust Project A Cargo vulnerability in Rust 1.25 and prior makes it ignore the package key and download a wrong dependency Rust 1.38 releases with pipelined compilation for better parallelism while building a multi-crate project Homebrew 2.2 releases with support for macOS Catalina ActiveState adds thousands of curated Python packages to its platform

Yesterday, Apple released MacOS Catalina, its latest update for Macs and MacBooks. The new operating system can be installed from the homepage of its App Store. Catalina brings a host of new features, including the option to use apps from the iPad as well as turn the tablet into an additional display for computers. But this new update kills iTunes and faces some major issues. Apple has confirmed that there are some serious issues in MacOS Catalina, and affected consumers should refrain from updating the OS until these issues are addressed. Catalina is finally the download that kills iTunes, which is nowhere to be found in the new update. Instead, Apple has moved the features of iTunes into their own separate Music app, the new update also includes separate apps for Podcasts and TV. MacOS Catalina update is a big problem for DJs who rely on iTunes The Mac platform is especially popular with DJs, who cart around MacBook Pro machines jam-packed with music, playlists, mixes and specialist software to allow them to perform every evening. These have been tied to iTunes’ underlying XML database. But after nearly 2 decades, iTunes are discontinued in macOS Catalina, and the XML file no longer exists to index a local music collection. This has broken popular and niche music tools alike, including some of the major titles such as Traktor and Rekordbox. The Verge reports that Apple has confirmed that this issue is down to its removal of the XML file, but is handing responsibility to the third-party developers behind each app. Unfortunately, for Apple’s reputation, those developers have been expecting the ability for the new standalone Music app to explore an XML file, a feature Apple suggested would be available until they could code around the lack of XML. Fact Mag also reported, “this news contradicts Apple’s earlier assertion that there would be a way to manually export the XML file from the new Music app, though Catalina’s launch yesterday now proves this isn’t the case at all.” Apple advice DJs that, if you rely on a software that needs this XML file to function, then do not update to Catalina until individual developers have issued compatibility updates for the new operating system. Catalina drops support for 32-bit applications and faces other issues as well Catalina also drops support for 32-bit applications. The 32-bit applications will simply not run under the new system, this version of macOS is a 64-bit only. If you are a Mac user that is reliant on a 32-bit app, then you have just a single dialog on installation that warns of the loss of support. And with these there are other questions which a user will need answers to like, you would need to know which of your apps are 32-bit and which are 64-bit? And if they are mission-critical in your role and is a 64-bit alternative available? It's not just this, a number of creative tools, including Apple Aperture, Microsoft Office 2011 and Adobe CS6 are also experiencing issues with Catalina. Additionally, there are issues with font in MacOS Catalina, as per the Chromium blog, the macOS system font appears "off" -- too light / tight kerning. It is clear that Apple wants to push forward with its platforms, but it needs to remember that the hardware has to work in the real world today. Apple should be consistent in what features it offers, it should provide clear and accurate information to developers and users, and it should ensure the very least that its own store is in order. TextMate 2.0, the text editor for macOS releases MacOS terminal emulator, iTerm2 3.3.0 is here with new Python scripting API, a scriptable status bar, Minimal theme, and more Apple previews macOS Catalina 10.15 beta, featuring Apple music, TV apps, security, zsh shell, driverKit, and much more! WWDC 2019 highlights: Apple introduces SwiftUI, new privacy-focused sign in, updates to iOS, macOS, and iPad and more Apple plans to make notarization a default requirement in all future macOS updates

Yesterday, the team behind Python posted details about the sunsetting of Python 2. As announced before, post January 1, 2020, Python 2 will not be maintained by the Python team. This means that it will no longer receive new features and it will not be improved even if a security problem is found in it. https://twitter.com/gvanrossum/status/1170949978036084736 Why is Python 2 retiring? In the detailed post, the Python team explains that the huge alterations needed in Python 2 led to the birth of Python 3 in 2006. To keep users happy, the Python team kept improving and publishing both the versions together. However, due to some changes that Python 2 couldn’t  handle and scarcity of time required to improve Python 3 faster, the Python team has decided to sunset the second version. The team says, “So, in 2008, we announced that we would sunset Python 2 in 2015, and asked people to upgrade before then. Some did, but many did not. So, in 2014, we extended that sunset till 2020.” The Python team has clearly stated that January 1, 2020 onwards, they will not upgrade or improve the second version of Python even if a fatal security problem crops up in it. Their advice to Python 2 users is to switch to Python 3 using the official porting guide as the former will not support many tools in the future. On the other hand, Python 3 supports graph for all the 360 most popular Python packages. Users can also check out the ‘Can I Use Python 3?’ to find out which tools need to upgrade to Python 3. Python 3 adoption has begun As the end date of Python has been decided earlier on, many implementations of Python have already dropped support for Python 2 or are supporting both Python 2 and 3 for now. Two months ago, NumPy, the library for Python programming language officially dropped support for Python 2.7 in its latest version NumPy 1.17.0. It will only support Python versions 3.5 – 3.7. Earlier this year, pandas 0.24 stopped support for Python 2. Pandas maintainer, Jeff Reback had said, “It's 2019 and Python 2 is slowly trickling out of the PyData stack.” However, not all projects are yet fully on board. There has also been efforts taken to keep Python 2 alive. In August this year, PyPy announced that that they do not plan to deprecate Python 2.7 support as long as PyPy exists. https://twitter.com/pypyproject/status/1160209907079176192 Many users are happy to say goodbye to the second version of Python in favor of building towards a long term vision. https://twitter.com/mkennedy/status/1171132063220502528 https://twitter.com/MeskinDaniel/status/1171244860386480129 A user on Hacker News comments, “In 2015, there was no way I could have moved to Python 3. There were too many libraries I depended on that hadn't ported yet. In 2019, I feel pretty confident about using Python 3, having used it exclusively for about 18 months now. For my personal use case at least, this timeline worked out well for me. Hopefully it works out for most everyone. I can't imagine they made this decision without at least some data backing it up.” Head over to the Python website for more details about about this news. Latest news in Python Introducing OpenDrop, an open-source implementation of Apple AirDrop written in Python Poetry, a Python dependency management and packaging tool, releases v1 beta 1 with URL dependency Łukasz Langa at PyLondinium19: “If Python stays synonymous with CPython for too long, we’ll be in big trouble”

Yesterday, Steve Canon, a member of Apple’s Swift Standard Library team announced a new open-source project called Swift Numerics. The goal behind this project is to enable the use of Swift language in new domains of programming. What is Swift Numerics Swift Numerics is a Swift package containing a set of fine-grained modules. These modules fall broadly under two categories. One, modules that are too specialized to be included into the standard library, but are general enough to be in a single common package. The second category includes those modules that are “under active development toward possible future inclusion in the standard library.” Currently, Swift Numerics has two most-requested modules: Real and Complex. The Real module provides basic math functions proposed in SE-0246. This proposal was accepted but due to some limitations in the compiler, it is not yet possible to add the new functions directly to the standard library. Real provides the basic math functionalities in a separate module so that developers can start using them right away in their projects. The Complex module introduces a Complex number type over an underlying Real type. It includes usual arithmetic operators for complex numbers. It is conformant to usual protocols such as Equatable, Hashable, Codable, and Numeric. The support for complex numbers can be especially useful when working with Fourier transforms and signal processing algorithms. The modules included in Swift Numerics have minimal dependencies. For instance, the current modules only require the availability of the Swift and C standard libraries and the runtime support provided by compiler-rt. Also, the Swift Numerics package is open-sourced under the same license and contribution guidelines as the Swift project (Apache License 2.0). In a discussion on Hacker News, many developers shared their views on Swift Numerics. A user commented,  “Really looking forward to ShapedArray. Eventually, a lot of what one might do with Python may be available in Swift.” Read the official announcement by Apple to know more about Swift Numerics. Also, check out its GitHub repository. Swift shares diagnostic architecture improvements that will be part of the Swift 5.2 release Developers from the Swift for TensorFlow project propose adding first-class differentiable programming to Swift Declarative UI programming faceoff: Apple’s SwiftUI vs Google’s Flutter Introducing SwiftWasm, a tool for compiling Swift to WebAssembly Swift is improving the UI of its generics model with the “reverse generics” system

Google Summer of Code (GSoC), a global program focused on introducing students to open source software development is nearing the end of its competition for this year. A student developer named Victor Perevertkin has been successful in his GSoC 2018 project on Btrfs file-system support for ReactOS. He has been able to boot the Windows API/ABI compatible OS off Btrfs. [box type="shadow" align="" class="" width=""]ReactOS is a free and open Source operating system and is compatible with applications and drivers written for the Microsoft Windows NT family of operating systems (NT4, 2000, XP, 2003, Vista, Seven). [/box] For his GSoC 2018 project, Perevertkin has been working on Btrfs support within the ReactOS boot-loader as well as other fixes needed to allow for ReactOS to be installed on and boot from a Btrfs file-system. BTRFS is case-sensitive file system, so paths like /ReactOS/System32, /reactos/system32, /ReactOS/system32 are different here. However, Windows is written assuming that case does not matter during path lookup. This issue is solved in WinBtrfs driver, but for Freeloader it can be a bit tricky. After Perevertkin was done with the Freeloader development and had fixed the VirtualBox bug, he was able to get to first error message from btrfs-booted ReactOS. He later found out that this was due to a bug in WinBtrfs driver. A pull-request to the upstream repository with a bugfix is provided on GitHub repository. At present, ReactOS is able to boot from BTRFS partition and also is in quite stable state. However, some problems are yet to be addressed. Read about this news in detail on ReactOS Blog. ReactOS version 0.4.9 released with Self-hosting and FastFAT crash fixes Google’s App Maker, a low-code tool for building business apps, is now generally available 5 reasons you should learn to code

Hi everyone, I’m Annie and I recently joined the Angular Components team after finishing up my rotations as an Engineering Resident here at Google. During the first rotation of my residency I worked on the Closure Compiler and implemented some new ES2020 features including nullish coalesce and optional chaining. After that, my second rotation project was with the Angular Components where I took on giving material.angular.io a long awaited face lift. If you have recently visited the Angular Materials documentation site you will have noticed some new visual updates. We’ve included new vibrant images on the components page, updates to the homepage, a guides page revamp and so much more! Today I would like to highlight how we generated these fun colorful images. We were inspired by the illustrations on the Material Design components page which had aesthetic abstract designs that represented each component. We wanted to adapt the idea for material.angular.io but had some constraints and requirements to consider. First of all, we didn’t have a dedicated illustrator or designer for the project because of the tight deadline of my residency. Second of all, we wanted the images to be compact but clearly showcase each component and its usage. Finally, we wanted to be able to update these images easily when a component’s appearance changed. For the team the choice became clear: we’re going to need to build something ourselves to solve for these requirements. While weighing our design options, we decided that we preferred a more realistic view of the components instead of abstract representations. This is where we came up with the idea of creating “scenes” for each component and capturing them as they would appear in use. We needed a way to efficiently capture these components. We turned to a technique called screenshot testing. Screenshot testing is a technique that captures an image of the page of the provided url and compares it to an expected image. Using this technique we were able to generate the scenes for all 35 components. Here’s how we did it: Set up a route for each component that contains a “scene” using the actual material component Create an end-to-end testing environment and take screenshots of each route with protractor Save the screenshots instead of comparing them to an expected image Load the screenshots from the site One of the benefits of our approach is that whenever we update a component, we can just take new screenshots. This process saves incredible amounts of time and effort. To create each of the scenes we held a mini hackathon to come up with fun ideas! For example, for the button component (top) we wanted to showcase all the different types and styles of buttons available (icon, FAB, raised, etc.). For the button toggle component (bottom) we wanted to show the toggle in both states in a realistic scenario where someone might use a button toggle. Conclusion It was really exciting to see the new site go live with all the changes we made and we hope you enjoy them too! Be sure to check out the site and let us know what your favorite part is! Happy coding, friends! Giving material.angular.io a refresh was originally published in Angular Blog on Medium, where people are continuing the conversation by highlighting and responding to this story.

This month, during the Microsoft Build 2019, the team behind .NET Core announced that .NET Core 5 will be coming in 2020. Yesterday the team at .NET Core released the .NET Core May 2019 updates for 1.0.16, 1.1.14, 2.1.11 and 2.2.5. The updates include security, reliability fixes, and updated packages. Expected updates in .NET Core Security .NET Core Tampering Vulnerability(CVE-2019-0820) When .NET Core improperly processes RegEx strings, a denial of service vulnerability exists. In this case, the attacker who can successfully exploit this vulnerability can cause a denial of service against a .NET application. Even a remote unauthenticated attacker can exploit this vulnerability by issuing specially crafted requests to a .NET Core application. This update addresses this vulnerability by correcting how .NET Core applications handle RegEx string processing. This security advisory provides information about a vulnerability in .NET Core 1.0, 1.1, 2.1 and 2.2. Denial of Service vulnerability in .NET Core and ASP.NET Core (CVE-2019-0980 & CVE-2019-0981) When .NET Core and ASP.NET Core improperly handle web requests, denial of service vulnerability exists. An attacker who can successfully exploit this vulnerability can cause a denial of service against a .NET Core and ASP.NET Core application. This vulnerability can be exploited remotely and without authentication. A remote unauthenticated attacker can exploit this vulnerability by issuing specially crafted requests to a .NET Core application. This update addresses this vulnerability by correcting how .NET Core and ASP.NET Core web applications handle web requests. This security advisory provides information about the two vulnerabilities (CVE-2019-0980 & CVE-2019-0981) in .NET Core and ASP.NET Core 1.0, 1.1, 2.1, and 2.2. ASP.NET Core Denial of Service vulnerability(CVE-2019-0982) When ASP.NET Core improperly handles web requests, a denial of service vulnerability exists. An attacker who can successfully exploit this vulnerability can cause a denial of service against an ASP.NET Core web application. This vulnerability can be exploited remotely and without authentication. A remote unauthenticated attacker can exploit this vulnerability by issuing specially crafted requests to the ASP.NET Core application. This update addresses this vulnerability by correcting how the ASP.NET Core web application handles web requests. This security advisory provides information about a vulnerability (CVE-2019-0982) in ASP.NET Core 2.1 and 2.2. Docker images .NET Docker images have now been updated. microsoft/dotnet, microsoft/dotnet-samples, and microsoft/aspnetcore repos have also been updated. Users can get the latest .NET Core updates on the .NET Core download page. To know more about this news, check out the official announcement. .NET 5 arriving in 2020! Docker announces collaboration with Microsoft’s .NET at DockerCon 2019 .NET for Apache Spark Preview is out now!  

Mozilla is constantly putting its efforts into improving Firefox’s devtools. One such effort is Firefox Replay, an experimental tool that allows Firefox content processes to record their behavior so that it can be replayed and rewound later. The main highlight of Firefox Replay is the “code timeline” that enables you to scan through every code execution at a glance. Along with execution points, the timeline also shows exceptions, events, and network requests in real-time. It also allows you to save your recordings and pick up where you left afterward. How Firefox Replay works The record and replay behavior is achieved by “controlling the non-determinism in the browser.” Initially, it records non-deterministic behaviors (intra-thread and inter-thread) and then replays it later to “force the browser to behave deterministically.” Firefox Replay includes IPC integration to enable communication between a recording or replaying process and the chrome process. Its rewind infrastructure allows a replaying process to restore a previous state. Its debugger integration enables the JS debugger to read the required information from a replaying process and control the process’s execution. Firefox Replay is not officially released yet, however, Mac users can give it try by downloading the nightly builds. Since it is still experimental, Firefox Replay is disabled by default. You can turn it on with the ‘devtools.recordreplay.enabled’ preference. Read also: Firefox Nightly browser: Debugging your app is now fun with Mozilla’s new ‘time travel’ feature The team is working on support for other platforms as well. “Windows port work is underway but is not yet working.  The difficulties are in figuring out the set of system library APIs to intercept, in getting the memory management and dirty memory parts of the rewind infrastructure to work, and in handling the different graphics and IPC pathways on different platforms,” the official doc reads. In a discussion on Hacker News, many users were excited to try out this tool. A user commented, “This might be enough to get me to use Firefox to develop with. This could be huge for its market share, a big part of the reason chrome was able to become so popular was because of how good its devtools were (compared to the competition at the time). Firefox definitely managed to catch up but not before lots of devs switched to chrome and stopped checking for compatibility with Firefox.” “This will be an absolute game-changer for web development. I am currently working on a really simplified version of this but as a chrome extension. We deal with a lot of real-time data and have been facing some timing issues (network and user input) which is really hard to reproduce,” a user added. Check out Mozilla’s official docs to know more in detail. Firefox 70 released with better security, CSS, and JavaScript improvements The new WebSocket Inspector will be released in Firefox 71 Google and Mozilla to remove Extended Validation indicators in Chrome 77 and Firefox 70

Today, we are launching .NET Live TV, your one stop shop for all .NET and Visual Studio live streams across Twitch and YouTube. We are always looking for new ways to bring great content to the developer community and innovate in ways to interact with you in real-time. Live streaming gives us the opportunity to deliver more content where everyone can ask questions and interact with the product teams. We started our journey several years ago with the .NET Community Standup series. It’s a weekly “behind the scenes” live stream that shows you what goes into building the runtimes, languages, frameworks, and tools we all love. As it grew, so did our dreams of delivering even more awesome .NET live stream content. .NET Live TV takes things to a whole new level with the introduction of new shows and a new website. It is a single place to bookmark so you can stay up to date with live streams across several Twitch and YouTube channels and with a single click can join in the conversation. Here are some of the new shows that recently launched that you could look forward to: Expanded .NET Community Standups What started as the ASP.NET Community Standup has grown into 7 unique shows throughout the month! Here is a quick guide to the schedule of the shows that all start at 10:00 AM Pacific: Tuesday: ASP.NET hosted by Jon Galloway with a monthly Blazor focus hosted by Safia Abdalla kicking off Nov 17! Wednesday: Rotating – Entity Framework hosted by Jeremy Likness & Machine Learning hosted by Bri Achtman 1st Thursday: Xamarin hosted by Maddy Leger 2nd Thursday: Languages & Runtime hosted by Immo Landwerth 3rd Thursday: .NET Tooling hosted by Kendra Havens 4th Thursday: .NET Desktop hosted by Olia Gavrysh Packed Week of .NET Shows! DayTime (PT) Show Description Monday 6:00 AM Join Jeff Fritz (csharpfritz) in this start from the beginning series to learn C# in this talk-show format that answers viewers questions and provides interactive samples with every episode. Monday 9:00 AM Join David Pine, Scott Addie, Cam Soper, and more from the Developer Relations team at Microsoft each week as they highlight the amazing community members in the .NET community. Monday 11:00 AM A weekly show dedicated to the topic of working from home. Mads Kristensen from the Visual Studio team invites guests onto the show for conversations about anything and everything related to Visual Studio and working from home. Tuesday 10:00 AM Join members from the ASP.NET teams for our community standup covering great community contributions for ASP.NET, ASP.NET Core, and more. Tuesday 12:00 PM Join Instafluff (Raphael) each week live on Twitch as he works on fun C# game related projects from his C# corner. Wednesday 10:00 AM Join the Entity Framework and the Machine learning teams for their community standups covering great community contributions. Thursday 10:00 AM Join the Xamarin, Languages & Runtime, .NET Tooling, and .NET Desktop teams covering great community contributions for each subject. Thursday 2:00 PM Join Cecil Phillip as he hosts and interviews amazing .NET contributors from the .NET teams and the community. Friday 2:00 PM Join Mads Kristensen from the Visual Studio team each week as he builds extensions for Visual Studio live! More to come! Be sure to bookmark live.dot.net as we are living streaming 5 days a week and adding even more shows soon! If you are looking for even more great developer video content be sure to check out Microsoft Learn TV where in addition to some of the shows from .NET Live TV you will find 24 hour a day streaming content of all topics. The post Introducing .NET Live TV – Daily Developer Live Streams appeared first on .NET Blog.