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lib: attrs: add renaming functions

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This commit is contained in:
Bruno BELANYI 2021-04-03 17:35:14 +00:00
parent af317ac156
commit 9690b0b14b
1 changed files with 16 additions and 1 deletions
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17
lib/attrs.nix
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@ -1,6 +1,6 @@
{ lib, ... }:
let
inherit (lib) filterAttrs listToAttrs mapAttrs';
inherit (lib) filterAttrs listToAttrs mapAttrs' nameValuePair;
in
{
# Filter a generated set of attrs using a predicate function.
@ -18,4 +18,19 @@ in
# (value -> { name = any; value = any; })
# attrs
genAttrs' = values: f: listToAttrs (map f values);
# Rename each of the attributes in an attribute set using the mapping function
#
# renameAttrs ::
# (name -> new name)
# attrs
renameAttrs = f: mapAttrs' (name: value: nameValuePair (f name) value);
# Rename each of the attributes in an attribute set using a function which
# takes the attribute's name and value as inputs.
#
# renameAttrs' ::
# (name -> value -> new name)
# attrs
renameAttrs' = f: mapAttrs' (name: value: nameValuePair (f name value) value);
}