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Add items, mitems and mpairs for cstrings

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def
2015-01-28 02:22:45 +01:00
parent fa1e209b63
commit 8c902ca781
1 changed files with 22 additions and 0 deletions
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22
lib/system.nim
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@@ -1696,6 +1696,13 @@ iterator items*(a: cstring): char {.inline.} =
yield a[i]
inc(i)
iterator mitems*(a: var cstring): var char {.inline.} =
## iterates over each item of `a` so that you can modify the yielded value.
var i = 0
while a[i] != '\0':
yield a[i]
inc(i)
iterator items*(E: typedesc[enum]): E =
## iterates over the values of the enum ``E``.
for v in low(E)..high(E):
@@ -1765,6 +1772,21 @@ iterator mpairs*(a: var string): tuple[key: int, val: var char] {.inline.} =
yield (i, a[i])
inc(i)
iterator pairs*(a: cstring): tuple[key: int, val: char] {.inline.} =
## iterates over each item of `a`. Yields ``(index, a[index])`` pairs.
var i = 0
while a[i] != '\0':
yield (i, a[i])
inc(i)
iterator mpairs*(a: var cstring): tuple[key: int, val: var char] {.inline.} =
## iterates over each item of `a`. Yields ``(index, a[index])`` pairs.
## ``a[index]`` can be modified.
var i = 0
while a[i] != '\0':
yield (i, a[i])
inc(i)
proc isNil*[T](x: seq[T]): bool {.noSideEffect, magic: "IsNil".}
proc isNil*[T](x: ref T): bool {.noSideEffect, magic: "IsNil".}