Type constraints
Type constraints are a sort of meta-type for the function type parameter. Type constraints dictate the allowed type arguments for any given type parameter of a function.
Type constraints in Go generics refer to interfaces that define sets of types. These interfaces play a powerful role in specifying the requirements or capabilities that a type parameter must satisfy when working with generic functions or types. To use these interfaces effectively, they must be placed in what is known as the “constraint position” within the syntax, specifically in the type parameter list where the type parameter is declared.
In this constraint position, when declaring a generic function or type, the constraints are expressed using an interface type to define the expected behavior of the type parameter. This ensures that the provided types adhere to the specified constraints, allowing the generic code to operate on them safely. By enforcing these constraints, the...
