One of my favourite feature of C++ has been now made available to iOS / Mac Developers in swift! Now you can overload any operator or combination of operators and thus be able to define a behaviour to implement when its used in an expression.
Below is a piece of code that you can try out in Xcode's Playground
With the addition of === operator, using == operator for comparing 2 reference type results in a compiler error, unless you overload it as shown above.
Below is a piece of code that you can try out in Xcode's Playground
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| class MyClass { | |
| } | |
| @infix func == (left: MyClass, right: MyClass) -> Bool { | |
| return left === right | |
| } | |
| var reference1 = MyClass() | |
| var reference2 = reference1 | |
| var result1 = reference1 == reference2 |
0 comments:
Post a Comment