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system.nim documentation: setLen can handle nil now

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Andreas Rumpf
2018-04-28 09:31:22 +02:00
parent ee7515e376
commit 1eaeb8945b
1 changed files with 2 additions and 4 deletions
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6
lib/system.nim
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@@ -1280,15 +1280,13 @@ proc setLen*[T](s: var seq[T], newlen: Natural) {.
## sets the length of `s` to `newlen`.
## ``T`` may be any sequence type.
## If the current length is greater than the new length,
## ``s`` will be truncated. `s` cannot be nil! To initialize a sequence with
## a size, use ``newSeq`` instead.
## ``s`` will be truncated.
proc setLen*(s: var string, newlen: Natural) {.
magic: "SetLengthStr", noSideEffect.}
## sets the length of `s` to `newlen`.
## If the current length is greater than the new length,
## ``s`` will be truncated. `s` cannot be nil! To initialize a string with
## a size, use ``newString`` instead.
## ``s`` will be truncated.
##
## .. code-block:: Nim
## var myS = "Nim is great!!"