mikeash

struct IterateVars<T> {
    let f: T -> T
    
    func go(inout x: T) -> IterateVars {
        x = f(x)
        return self
    }
}

var a = 2.0;

mikeash

enum Endianness {
    case Big
    case Little
    
    func swapWithNative(slice: Slice<UInt8>) -> Slice<UInt8> {
        #if true
        let native = Little
        #else
        let native = Big
        #endif

kongtomorrow

func forAllCombinations<T>(r1 : Range<T>, r2 : Range<T>, body : (T, T) -> ()) {
    for i in r1 {
        for j in r2 {
            body(i, j)
        }
    }
}

 forAllCombinations(0..3, 0..5) {
     (i, j) in