diff options
| author | Eelco Dolstra <eelco.dolstra@logicblox.com> | 2012-08-13 14:19:31 -0400 |
|---|---|---|
| committer | Eelco Dolstra <eelco.dolstra@logicblox.com> | 2012-08-13 15:15:16 -0400 |
| commit | c0a483632c3e0193678dd58c994528d88d42ea00 (patch) | |
| tree | 794673d20c185d9c77c5222ec1f506417dfaa90a /pkgs/lib/strings.nix | |
| parent | 431c55cbf1f99748cb28566a33d15fb22bf76fe6 (diff) | |
| download | nixpkgs-c0a483632c3e0193678dd58c994528d88d42ea00.tar nixpkgs-c0a483632c3e0193678dd58c994528d88d42ea00.tar.gz nixpkgs-c0a483632c3e0193678dd58c994528d88d42ea00.tar.bz2 nixpkgs-c0a483632c3e0193678dd58c994528d88d42ea00.tar.lz nixpkgs-c0a483632c3e0193678dd58c994528d88d42ea00.tar.xz nixpkgs-c0a483632c3e0193678dd58c994528d88d42ea00.tar.zst nixpkgs-c0a483632c3e0193678dd58c994528d88d42ea00.zip | |
Eliminate some calls to ‘tail’
Diffstat (limited to 'pkgs/lib/strings.nix')
| -rw-r--r-- | pkgs/lib/strings.nix | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/pkgs/lib/strings.nix b/pkgs/lib/strings.nix index 071bb2c995b..fb2752d97c1 100644 --- a/pkgs/lib/strings.nix +++ b/pkgs/lib/strings.nix @@ -2,12 +2,12 @@ let lib = import ./default.nix; -inherit (builtins) add sub lessThan; +inherit (builtins) add sub lessThan length; in rec { - inherit (builtins) stringLength substring head tail lessThan sub; + inherit (builtins) stringLength substring head tail; # Concatenate a list of strings. @@ -22,7 +22,7 @@ rec { # Place an element between each element of a list, e.g., # `intersperse "," ["a" "b" "c"]' returns ["a" "," "b" "," "c"]. intersperse = separator: list: - if list == [] || tail list == [] + if list == [] || length list == 1 then list else [(head list) separator] ++ (intersperse separator (tail list)); |