=begin pod

=TITLE class Capture

    class Capture does Positonal does Associative { }

A Capture is a an argument list for passing it to a code object.
It contains a list-like part for positional arguments and a hash-like part
for named arguments.

Captures can be created by prefixing a term with a backslash C<\>.

    my $c = \42;            # Capture with one positional parts
    $c = \(1, 2, a => 'b'); # Capture wit two positional and one named part

Another common way to create a Capture is to prefix a sigilless parameter
with a vertical bar C<|>, which packs the remainder of the argument list
into that parameter.

    f(1, 2, 3, a => 4, b => 5);
    sub f($a, |c) {
        # c  is  \(2, 3, a => 4, b => 5)
    }

=head1 Methods

=head2 list

    method list(Capture:D:) returns Positional

Returns the positional part of the Capture.

=head2 hash

    method hash(Capture:D:) returns Associative

Returns the named/hash part of the Capture.

=head2 elems

    method elems(Capture:D:) returns Int:D

Returns the number of positional elements in the Capture.

=end pod