What is Swift used for?

As you can see, the syntax used is very similar to JavaScript , the main difference being the declaration of arguments and return types in Swift, since it is a static typed language. There are few other special variations of functions in Swift also, which we’ll look at in a separate blog.

Learning C++ to Contribute to the Swift Compiler The Swift compiler is written mostly in C++ , and this won’t change in the near future. You can extend the standard library using Swift, but if you want to contribute a new language feature or some optimization, you’ll need to write C++.

You use where in Swift to filter things, kinda like a conditional . In various places throughout Swift, the “where” clause provides a constraint and a clear indicator of the data or types you want to work with. What’s so special about where – as you’ll soon see – is its flexible syntax.

Swift Syntax Programs are made up of statements, executed sequentially . More than one statement is allowed per editor line when separated by a semicolon ( ; ). Units of work in Swift are modularized using functions and organized into types. Functions accept one or more parameters, and return values.25 Mar 2019