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natecook1000/dropFirstLast.swift

Created April 19, 2018 01:48
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dropFirstLast.swift
extension BidirectionalCollection {
func drop(first: Int, last: Int) -> SubSequence {
return self.dropFirst(first).dropLast(last)
}
}
let numbers = 0..<10
numbers.drop(first: 1, last: 1) // 1..<9
numbers.drop(first: 2, last: 4) // 2..<6
@blessingLopes
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blessingLopes commented Apr 19, 2018 •
edited
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🤔 Maybe because if we extend Collection we'd be able to do

let set = Set(arrayLiteral: 1,2,3,4,5).drop(first: 1, last: 3)
let dictionary = [1:2, 2:3, 4:5].drop(first: 1, last: 3)

which does not seem to make much sense

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