filterAttrs

lib.attrsets.filterAttrs

Docs pulled from | This Revision | about 9 hours ago

Filter an attribute set by removing all attributes for which the given predicate return false.

pred: Predicate taking an attribute name and an attribute value, which returns true to include the attribute, or false to exclude the attribute.
set: The attribute set to filter

filterAttrs :: (String -> Any -> Bool) -> AttrSet -> AttrSet

filterAttrs (n: v: n == "foo") { foo = 1; bar = 2; }
=> { foo = 1; }