Devoxx - France : Making Swift – 10 enseignements qu’on peut tirer des 31.463 commits qui ont...

10 lessons we can learnfrom the 36,303 (and counting)

Swift commits(And it's not a clickbait)

1. Everything has abeginning

Makefilelib/Lex/Lexer.cpplib/Lex/Makefilelib/Makefilelib/Parse/Makefilelib/Parse/Parser.cpptools/Makefiletools/swift/Makefiletools/swift/swift.cpp

swift.cpp

int main() {

}

11 commits later

386 commits later

2/A. SVN is not dead yet(At least not to everybody)

2/B. If you struggle with

gityou're not

alone

3. 36% of Swiftis written in Swift

4. ♥ is in the stdlib

Some examples...→ Optionals→ Array

→ Dictionary

...Other examples→ String→ Int→ Bool→ Bit

5. I tawt I taw a python

6. Generate Your Boilerplate

Template%{integerBinaryOps = [ (x[:-1], x[-1], x[:-1].capitalize(), 'a result') for x in 'add+ subtract- multiply* divide/'.split()] + [ ('remainder', '%', 'Divide', 'the remainder') ]}%

Usagepublic protocol _IntegerArithmeticType {% for name,_,Action,result in integerBinaryOps: /// ${Action} `lhs` and `rhs`, returning ${result} and a `Bool` that is /// true iff the operation caused an arithmetic overflow. static func ${name}WithOverflow(lhs: Self, _ rhs: Self) -> (Self, overflow: Bool)% end}

7. Comment your complexity

/// Insert `newElement` at index `i`. /// /// Invalidates all indices with respect to `self`. /// /// - Complexity: O(`self.count`). public mutating func insert(newElement: Character, atIndex i: Index) { withMutableCharacters { (inout v: CharacterView) in v.insert(newElement, atIndex: i) } }

8. We are the facilitatorsof our own creative evolution

github.com/apple/swift-evolution

Commonlyrejectedchanges

github.com/apple/swift-evolution/blob/master/commonly_proposed.md

March, 21st 2016

Swift 2.2Integrates the community feedback

9. We all code by night

10. It's (too) easy to complain aboutsomeone else's code

Thanks!

Simone Civetta@viteinfinite

Sources

→ Swift Weekly Brief by Jesse Squires→ Swift Evolution Mailing List

→ github.com/apple