From type/Num

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method Capture()

Throws X::Cannot::Capture.

From type/Int

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method Capture()

Throws X::Cannot::Capture.

From type/ComplexStr

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method Capture(ComplexStr:D: --> Capture:D)

Equivalent to Mu.Capture.

From type/Supply

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method Capture(Supply:D: --> Capture:D)

Equivalent to calling .List.Capture on the invocant.

From type/Range

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method Capture(Range:D: --> Capture:D)

Returns a Capture with values of .min .max, .excludes-min, .excludes-max, .infinite, and .is-int as named arguments.

From type/Blob

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method Capture(Blob:D:)

Converts the object to a List which is, in turn, coerced to a Capture.

From type/Channel

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method Capture(Channel:D: --> Capture:D)

Equivalent to calling .List.Capture on the invocant.

From type/Callable

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method Capture()

Throws X::Cannot::Capture.

From type/RatStr

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method Capture(RatStr:D: --> Capture:D)

Equivalent to Mu.Capture.

From type/Mu

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method Capture(Mu:D: --> Capture:D)

Returns a Capture with named arguments corresponding to invocant's public attributes:

class Foo {
    has $.foo = 42;
    has $.bar = 70;
    method bar { 'something else' }
}.new.Capture.say; # OUTPUT: «\(:bar("something else"), :foo(42))␤»

From type/QuantHash

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method Capture()

Returns the object as a Capture by previously coercing it to a Hash.

From type/Seq

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method Capture()

Coerces the object to a List, which is in turn coerced into a Capture

From type/Failure

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method Capture()

Throws X::Cannot::Capture if the invocant is a type object or a handled Failure. Otherwise, throws the invocant's exception.

From type/Signature

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method Capture()

Throws X::Cannot::Capture.

From type/Map

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method Capture(Map:D:)

Returns a Capture where each key, if any, has been converted to a named argument with the same value as it had in the original Map. The returned Capture will not contain any positional arguments.

my $map = Map.new('a' => 2, 'b' => 17);
my $capture = $map.Capture;
my-sub(|$capture);                                # OUTPUT: «2, 17» 
 
sub my-sub(:$a, :$b) {
    say "$a, $b"
}

From type/Capture

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method Capture(Capture:D: --> Capture:D)

Returns itself, i.e. the invocant.

say \(1,2,3, apples => 2).Capture; # OUTPUT: «\(1, 2, 3, :apples(2))␤»

From type/Str

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method Capture()

Throws X::Cannot::Capture.

From type/Whatever

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method Capture()

Throws X::Cannot::Capture.

From type/List

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method Capture(List:D: --> Capture:D)

Returns a Capture where each Pair, if any, in the List has been converted to a named argument (with the key of the Pair stringified). All other elements in the List are converted to positional arguments in the order they are found, i.e. the first non pair item in the list becomes the first positional argument, which gets index 0, the second non pair item becomes the second positional argument, getting index 1 etc.

my $list = (7, 5, a => 2, b => 17);
my $capture = $list.Capture;
say $capture.keys;                                # OUTPUT: «(0 1 a b)␤» 
my-sub(|$capture);                                # OUTPUT: «7, 5, 2, 17» 
 
sub my-sub($first, $second, :$a, :$b) {
    say "$first, $second, $a, $b"
}

A more advanced example demonstrating the returned Capture being matched against a Signature.

my $list = (7, 5, a => 2, b => 17);
say so $list.Capture ~~ :($ where * == 7,$,:$a,:$b); # OUTPUT: «True␤» 
 
$list = (8, 5, a => 2, b => 17);
say so $list.Capture ~~ :($ where * == 7,$,:$a,:$b); # OUTPUT: «False␤»

From type/Version

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method Capture()

Throws X::Cannot::Capture.