Documentation for method default assembled from the following types:

class Hash§

From Hash

(Hash) method default§

Defined as:

method default()

Returns the default value of the invocant, i.e. the value which is returned when a non existing key is used to access an element in the Hash. Unless the Hash is declared as having a default value by using the is default trait the method returns the type object (Any).

my %h1 = 'apples' => 3, 'oranges' => 7;
say %h1.default;                                       # OUTPUT: «(Any)␤» 
say %h1{'bananas'};                                    # OUTPUT: «(Any)␤» 
 
my %h2 is default(1) = 'apples' => 3, 'oranges' => 7;
say %h2.default;                                       # OUTPUT: «1␤» 
say %h2{'apples'} + %h2{'bananas'};                    # OUTPUT: «4␤»

class Scalar§

From Scalar

(Scalar) method default§

method default(Scalar:D: --> Str)

Returns the default value associated with the container.

Example:

my $x is default(666) = 42;
say $x.VAR.default;             # OUTPUT: «666»

role Baggy§

From Baggy

(Baggy) method default§

Defined as:

method default(Baggy:D: --> Int:D)

Returns zero.

my $breakfast = bag <eggs bacon>;
say $breakfast.default;                           # OUTPUT: «0␤»

role Setty§

From Setty

(Setty) method default§

Defined as:

method default(--> False)

Returns the default value of the invocant, i.e. the value which is returned when trying to access an element in the Setty object which has not been previously initialized or when accessing an element which has explicitly been set to Nil or False.

my $s1 = SetHash.new(1, 2, 3);
say $s1{2};                                           # OUTPUT: «True␤» 
$s1{2} = Nil;
say $s1{2};                                           # OUTPUT: «False␤» 
# access non initialized element 
say $s1{4};                                           # OUTPUT: «False␤»

class Array§

From Array

(Array) method default§

Defined as:

method default

Returns the default value of the invocant, i.e. the value which is returned when trying to access an element in the Array which has not been previously initialized or when accessing an element which has explicitly been set to Nil. Unless the Array is declared as having a default value by using the is default trait the method returns the type object (Any).

my @a1 = 1, "two", 2.718;
say @a1.default;                               # OUTPUT: «(Any)␤» 
say @a1[4];                                    # OUTPUT: «(Any)␤» 
 
my @a2 is default(17) = 1, "two", 3;
say @a2.default;                               # OUTPUT: «17␤» 
say @a2[4];                                    # OUTPUT: «17␤» 
@a2[1] = Nil;                                  # (resets element to its default) 
say @a2[1];                                    # OUTPUT: «17␤» 

class Parameter§

From Parameter

(Parameter) method default§

Returns a closure that upon invocation returns the default value for this parameter, or Any if no default was provided.