diff options
| author | Felix Buehler <account@buehler.rocks> | 2023-06-25 13:16:06 +0200 |
|---|---|---|
| committer | Felix Buehler <account@buehler.rocks> | 2023-11-14 19:52:32 +0100 |
| commit | 66261e9961254a5c8a7c096e091fd42deb988cee (patch) | |
| tree | 2ce363704f034762ffb7a96d5d3c9a152514a5d8 /lib/lists.nix | |
| parent | b5bd1053d2b02040f8e6f628bbe213358dbe3bfc (diff) | |
| download | nixpkgs-66261e9961254a5c8a7c096e091fd42deb988cee.tar nixpkgs-66261e9961254a5c8a7c096e091fd42deb988cee.tar.gz nixpkgs-66261e9961254a5c8a7c096e091fd42deb988cee.tar.bz2 nixpkgs-66261e9961254a5c8a7c096e091fd42deb988cee.tar.lz nixpkgs-66261e9961254a5c8a7c096e091fd42deb988cee.tar.xz nixpkgs-66261e9961254a5c8a7c096e091fd42deb988cee.tar.zst nixpkgs-66261e9961254a5c8a7c096e091fd42deb988cee.zip | |
lib.lists.allUnique: init
Diffstat (limited to 'lib/lists.nix')
| -rw-r--r-- | lib/lists.nix | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/lists.nix b/lib/lists.nix index 3835e3ba69c..15047f488f4 100644 --- a/lib/lists.nix +++ b/lib/lists.nix @@ -821,6 +821,19 @@ rec { */ unique = foldl' (acc: e: if elem e acc then acc else acc ++ [ e ]) []; + /* Check if list contains only unique elements. O(n^2) complexity. + + Type: allUnique :: [a] -> bool + + Example: + allUnique [ 3 2 3 4 ] + => false + allUnique [ 3 2 4 1 ] + => true + */ + allUnique = list: (length (unique list) == length list); + + /* Intersects list 'e' and another list. O(nm) complexity. Example: |