title: Swift: Trying to read swift source code
body: <p>I am fairly new to coding and yet I often run into problems, because I lack knowledge. I would like to teach myself by reading swift´s source code, but I either don't know how to read or don't know how to access it. </p>
  
  <p>Easy example: I´d like to know more about - let's say Integers. So I type in Int and command click the button to "Jump to [its] definition".
  There I find the following:</p>
  
  <pre><code>    public struct Int : FixedWidthInteger, SignedInteger { 
          ..
          public typealias IntegerLiteralType = Int
          ..
          public init(bitPattern x: UInt)
          ..
          public static func *= (lhs: inout Int, rhs: Int)
          ...
  </code></pre>
  
  <p>Some of these methods and functions make perfect sense to me, but many, just like the latter, lack a function body. </p>
  
  <p><strong>So my question is:</strong> How can I access the definition of e.g. <em>public static func *= (lhs: inout Int, rhs: Int)</em> or where can I learn how to read it properly if that one line actually is the whole definition?</p>