Custom operators in swift

Abusing custom operators in Swift.
You can find the sample code on github https://github.com/zats/Presentations/tree/master/Operators%20In%20Swift/Sample%20Project

Transcript

1. Operators in Swift Sash Zats - zats.io - @zats - September 8, Tel Aviv
2. Operator?
3. Operator! Language constructs which behave generally like functions, but differ syntactically or semantically from usual functions — Wikipedia
4. …in Swift? An operator is a special symbol or phrase that you use to check, change, or combine values. — The Swift Programing Language
5. …in Swift! • Assignment, logic, math, binary, overflow, range; • Unary, binary, ternary; • Prefix, infix, postfix; • Precedence • Associativity
6. Overloading & custom operators • Define operator • Associativity, assignment, precedence • Implement function • Arguments define applicability • Overrides operators within the module • inout for assignment
7. Guidelines • Clarity • Simplicity • Analogy • Order of execution
8. Demo
9. Shortcoming • Why bother? What's wrong with functions? • No unicode in operator names. Where is my image.!? • No way to create ternary operators • No scopes: Cartography - auto layout done with custom operators
10. Conclusion To get around clashes when operator overloading, we should all just give them a three letter prefix — @danielctull