hasAttr
builtins.hasAttr
Primop
Docs pulled from | This Revision | about 9 hours ago
Takes 2 arguments
s, set
hasAttr returns true if set has an attribute named s, and
false otherwise. This is a dynamic version of the ? operator,
since s is an expression rather than an identifier.
This function is not defined in a .nix file. It is likely a builtins function or an alias of a builtins function. builtins functions are predefined functions provided by Nix.
Noogle also knows
Aliases
Detected Type
hasAttr :: String -> AttrSet -> Bool