Documentation for routine keys assembled from the following pages:
Role: Baggy §
From Baggy
(Baggy) method keys §
Defined as:
method keys(Baggy: --> Seq)Returns a Seq of all keys in the Baggy object without taking their individual weights into account as opposed to kxxv.
my = bag <eggs spam spam spam>;say .keys.sort; # OUTPUT: «(eggs spam)» my = ("a" => 5, "b" => 2).BagHash;say .keys.sort; # OUTPUT: «(a b)»Class: Any §
From Any
(Any) method keys §
Defined as:
multi method keys(Any: --> List)multi method keys(Any: --> List)For defined Any returns its keys after calling list on it, otherwise calls list and returns it.
my = Set(<Þor Oðin Freija>);say .keys; # OUTPUT: «(Þor Oðin Freija)»See also List.keys.
Trying the same on a class will return an empty list, since most of them don't really have keys.
Class: List §
From List
(List) routine keys §
Defined as:
sub keys( --> Seq)method keys(List: --> Seq)Returns a sequence of indexes into the list (e.g., 0..(@list.elems-1)).
say (1,2,3,4).keys; # OUTPUT: «0..3»Class: Map §
From Map
(Map) method keys §
Defined as:
method keys(Map: --> Seq)Returns a Seq of all keys in the Map.
my = Map.new('a' => (2, 3), 'b' => 17);say .keys; # OUTPUT: «(a b)»Role: Setty §
From Setty
(Setty) method keys §
Defined as:
multi method keys(Setty: --> Seq)Returns a Seq of all elements of the set.
my = Set.new(1, 2, 3);say .keys; # OUTPUT: «(3 1 2)»Class: Pair §
From Pair
(Pair) method keys §
Defined as:
multi method keys(Pair: --> List)Returns a List containing the key of the invocant.
say (Raku => "d").keys; # OUTPUT: «(Raku)»Class: Capture §
From Capture
(Capture) method keys §
Defined as:
multi method keys(Capture: --> Seq)Returns a Seq containing all positional keys followed by all named keys. For positional arguments the keys are the respective arguments ordinal position starting from zero.
my = \(2, 3, 5, apples => (red => 2));say .keys; # OUTPUT: «(0 1 2 apples)»