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index(n, stepsFrom: i)

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M-x findr-query-replace

\<advance(\([^:]+?\),\([
]+\)by: *\([^(),]*\|[^(),]+([^()]*)[^(),]*\)\(,\(?:[
]+\)limit: *\(?:[^()]*\|[^()]+([^()]*)[^()]*\)\)?)

index(\3,\2stepsFrom: \1\4)
This commit is contained in:
Dave Abrahams
2016-03-25 17:54:39 -07:00
parent 11259d1d14
commit 01127b32d5
31 changed files with 157 additions and 157 deletions
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6
stdlib/public/core/BidirectionalCollection.swift
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@@ -201,7 +201,7 @@ extension BidirectionalCollection where SubSequence == Self {
_precondition(n >= 0, "number of elements to remove should be non-negative")
_precondition(count >= numericCast(n),
"can't remove more items from a collection than it contains")
self = self[startIndex..<advance(endIndex, by: numericCast(-n))]
self = self[startIndex..<index(numericCast(-n), stepsFrom: endIndex)]
}
}
@@ -214,7 +214,7 @@ extension BidirectionalCollection {
public func dropLast(n: Int) -> SubSequence {
_precondition(
n >= 0, "Can't drop a negative number of elements from a collection")
let end = advance(endIndex, by: numericCast(-n), limit: startIndex)
let end = index(numericCast(-n), stepsFrom: endIndex, limit: startIndex)
return self[startIndex..<end]
}
@@ -231,7 +231,7 @@ extension BidirectionalCollection {
_precondition(
maxLength >= 0,
"Can't take a suffix of negative length from a collection")
let start = advance(endIndex, by: numericCast(-maxLength), limit: startIndex)
let start = index(numericCast(-maxLength), stepsFrom: endIndex, limit: startIndex)
return self[start..<endIndex]
}
}