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* Function to return a range of numbers.

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svn path=/nixpkgs/trunk/; revision=8850
This commit is contained in:
Eelco Dolstra 2007-06-09 19:45:55 +00:00
parent 6d58d51440
commit 9816367ed1
1 changed files with 8 additions and 1 deletions
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9
pkgs/lib/default.nix
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@ -117,5 +117,12 @@ rec {
# (e.g. `++ optional (system == "i686-linux") flashplayer').
optional = cond: elem: if cond then [elem] else [];
# Return a list of integers from `first' up to and including `last'.
range = first: last:
if builtins.lessThan last first
then []
else [first] ++ range (builtins.add first 1) last;
}