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You're reading from  Object???Oriented Programming with Swift 2

Product typeBook
Published inJan 2016
Reading LevelIntermediate
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ISBN-139781785885693
Edition1st Edition
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Gaston C. Hillar
Gaston C. Hillar
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Gaston C. Hillar

Gaston C. Hillar is Italian and has been working with computers since he was 8 years old. Gaston has a Bachelor's degree in computer science (graduated with honors) and an MBA. Currently, Gaston is an independent IT consultant and a freelance author who is always looking for new adventures anywhere in the world. He was a senior contributing editor at Dr. Dobb's, and has written more than a hundred articles on software development topics. He has received the prestigious Intel Black Belt Software Developer award eight times. He has written many articles about Java for Oracle Java Magazine. Gaston was also a former Microsoft MVP in technical computing. He lives with his wife, Vanesa, and his two sons, Kevin and Brandon.
Read more about Gaston C. Hillar

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Combining initializer requirements in protocols with generic types


We included an initializer requirement when we declared the AnimalProtocol protocol, so we know the necessary arguments to create an instance of any class that conforms to this protocol. We will add a new method that creates an instance of the generic type T and adds it to the party members in Party<T> class.

The following lines show the code for the new createAndAddMember method that receives a name String argument and returns an instance of the generic type T. We add the method to the body after the Party<T: AnimalProtocol where T: Equatable> { public class declaration:

public func createAndAddMember(name: String) -> T {
    let newMember = T(name: name)
    addMember(newMember)
    
    return newMember
}

The method uses the generic type T and passes the name argument to create a new instance called newMember. Then, the code calls the addMember method with newMember as an argument and finally returns the recently...

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Object???Oriented Programming with Swift 2
Published in: Jan 2016Publisher: ISBN-13: 9781785885693

Author (1)

author image
Gaston C. Hillar

Gaston C. Hillar is Italian and has been working with computers since he was 8 years old. Gaston has a Bachelor's degree in computer science (graduated with honors) and an MBA. Currently, Gaston is an independent IT consultant and a freelance author who is always looking for new adventures anywhere in the world. He was a senior contributing editor at Dr. Dobb's, and has written more than a hundred articles on software development topics. He has received the prestigious Intel Black Belt Software Developer award eight times. He has written many articles about Java for Oracle Java Magazine. Gaston was also a former Microsoft MVP in technical computing. He lives with his wife, Vanesa, and his two sons, Kevin and Brandon.
Read more about Gaston C. Hillar