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| author | Alyssa Ross <hi@alyssa.is> | 2023-11-16 12:53:32 +0100 |
|---|---|---|
| committer | Alyssa Ross <hi@alyssa.is> | 2023-11-16 12:53:32 +0100 |
| commit | 67419f0e56f99b0ebbe14574d3492110ac84c8d6 (patch) | |
| tree | 3abc8e1606a2c80b6f5d14fef175e50800202163 /nixpkgs/lib/lists.nix | |
| parent | a2c1eff83c3118a9aee8076c7f84f58137416b6e (diff) | |
| parent | 9008bc4eb62c878d0812105ea1b34255d651df88 (diff) | |
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Merge branch 'nixos-unstable-small' of https://github.com/NixOS/nixpkgs into HEAD
Diffstat (limited to 'nixpkgs/lib/lists.nix')
| -rw-r--r-- | nixpkgs/lib/lists.nix | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/nixpkgs/lib/lists.nix b/nixpkgs/lib/lists.nix index 3835e3ba69cb..15047f488f4d 100644 --- a/nixpkgs/lib/lists.nix +++ b/nixpkgs/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: |