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| author | Nicolas Pierron <nicolas.b.pierron@gmail.com> | 2009-09-28 18:22:14 +0000 |
|---|---|---|
| committer | Nicolas Pierron <nicolas.b.pierron@gmail.com> | 2009-09-28 18:22:14 +0000 |
| commit | e6399964cb628b705a8acf52223c4fd99229a43c (patch) | |
| tree | 5196836f03b150e0ded8c936f77d1c078ba498b2 /pkgs/lib/lists.nix | |
| parent | af88789507a2384d7ffcaa2349418c50339c2217 (diff) | |
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Add the zipLists and zipListsWith functions.
svn path=/nixpkgs/trunk/; revision=17476
Diffstat (limited to 'pkgs/lib/lists.nix')
| -rw-r--r-- | pkgs/lib/lists.nix | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/pkgs/lib/lists.nix b/pkgs/lib/lists.nix index 012b95ad061..785e47e7d52 100644 --- a/pkgs/lib/lists.nix +++ b/pkgs/lib/lists.nix @@ -127,5 +127,13 @@ rec { else { right = t.right; wrong = [h] ++ t.wrong; } ) { right = []; wrong = []; }; - + + zipListsWith = f: fst: snd: + if fst != [] && snd != [] then + [ (f (head fst) (head snd)) ] + ++ zipLists (tail fst) (tail snd) + else []; + + zipLists = zipListsWith (fst: snd: { inherit fst snd; }); + } |