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[stdlib] ~>_distanceTo() => method

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Swift SVN r29004
This commit is contained in:
Dave Abrahams
2015-05-25 04:59:04 +00:00
parent 186fe53f74
commit ed6c0dd49a
5 changed files with 39 additions and 43 deletions
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14
stdlib/public/core/StringUTF16.swift
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@@ -201,12 +201,14 @@ public func < (
// by conforming to RandomAccessIndexType.
/// Do not use this operator directly; call distance(start, end) instead.
@inline(__always)
public func ~> (
start: String.UTF16View.Index, rest:(_Distance, (String.UTF16View.Index))
) -> String.UTF16View.Index.Distance {
let end = rest.1
return start._offset.distanceTo(end._offset)
extension String.UTF16View.Index {
@inline(__always)
public func _distanceTo(
other: String.UTF16View.Index
) -> String.UTF16View.Index.Distance {
let end = other
return self._offset.distanceTo(end._offset)
}
}
/// Do not use this operator directly; call advance(start, n) instead.