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flatten: drastically improve performance, see #17626

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This commit is contained in:
Domen Kožar 2016-08-10 12:02:58 +02:00
parent 8955dc5e7e
commit ebffa9fd06
1 changed files with 1 additions and 1 deletions
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2
lib/lists.nix
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@ -89,7 +89,7 @@ rec {
*/ */
flatten = x: flatten = x:
if isList x if isList x
then foldl' (x: y: x ++ (flatten y)) [] x then concatMap (y: flatten y) x
else [x]; else [x];
/* Remove elements equal to 'e' from a list. Useful for buildInputs. /* Remove elements equal to 'e' from a list. Useful for buildInputs.