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attrsets: clarify that mapAttrs maps over *leaf* attrs #212189

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Merged
roberth merged 2 commits into from Jan 25, 2023
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attrsets: clarify that mapAttrs maps over *leaf* attrs #212189

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attrsets: clarify that mapAttrs maps over *leaf* attrs
Jan 22, 2023
a4e3e16
Update lib/attrsets.nix
Jan 25, 2023
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6 changes: 4 additions & 2 deletions lib/attrsets.nix
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Expand Up @@ -480,8 +480,10 @@ rec {


/* Like `mapAttrs`, except that it recursively applies itself to
attribute sets. Also, the first argument of the argument
function is a *list* of the names of the containing attributes.
the *leaf* attributes of a potentially-nested attribute set:
the second argument of the function will never be an attrset.
Also, the first argument of the argument function is a *list*
of the names of the containing attributes.
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Example:
mapAttrsRecursive (path: value: concatStringsSep "-" (path ++ [value]))
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