A more concise approach to Swift's stride functions. Inspired by the simplicity of MATLAB's approach to stride, these custom operators allow for a more succinct usage of Swift's two stride functions.
######Example 1: Building [0,2,4,6,8,10] using stride(through…)
- MATLAB:
0:2:10 - Swift:
0.stride(through:10, by:2) - SwiftyStride:
0..2..10
######Example 2: Building [0,2,4,6,8] using stride(to…)
- Swift:
0.stride(to:10, by:2) - SwiftyStride:
0..2..<10
####Notes:
- SwiftyStride outputs an
Array<Int>, whereas Swift outputs aRange<Int> - Comments and suggestions welcome!
####The code:
infix operator .. {associativity left}
func .. <T where T: Strideable>(lhs: T, rhs: T) -> (T,T){
return (lhs, rhs)
}
func .. <T where T: Strideable>(lhs: (T,T.Stride), rhs: T) -> [T]{
return Array(lhs.0.stride(through: rhs, by: lhs.1))
}
infix operator ..< {associativity left}
func ..< <T where T: Strideable>(lhs: (T,T.Stride), rhs: T) -> [T]{
return Array(lhs.0.stride(to: rhs, by: lhs.1))
}
print(0..2..10)
print(4..4..<16)
print(4.2..4..<16)