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new len(openarray) implementation

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Araq 2011-12-31 18:15:20 +01:00
commit 0d8e6dda69
4 changed files with 22 additions and 5 deletions
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lib/system.nim
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@ -309,7 +309,10 @@ proc newSeq*[T](s: var seq[T], len: int) {.magic: "NewSeq", noSideEffect.}
## This is equivalent to ``s = @[]; setlen(s, len)``, but more
## efficient since no reallocation is needed.
proc len*[T](x: openArray[T]): int {.magic: "LengthOpenArray", noSideEffect.}
when defined(newOpenArrayLen):
proc len*[T: openArray](x: T): int {.magic: "LengthOpenArray", noSideEffect.}
else:
proc len*[T](x: openArray[T]): int {.magic: "LengthOpenArray", noSideEffect.}
proc len*(x: string): int {.magic: "LengthStr", noSideEffect.}
proc len*(x: cstring): int {.magic: "LengthStr", noSideEffect.}
proc len*[I, T](x: array[I, T]): int {.magic: "LengthArray", noSideEffect.}