Types::Standard::ScalarRef - exporter utility for the ScalarRef type constraint

NAME SYNOPSIS STATUS DESCRIPTION Exports BUGS SEE ALSO AUTHOR COPYRIGHT AND LICENCE DISCLAIMER OF WARRANTIES

NAME

Types::Standard::ScalarRef − exporter utility for the ScalarRef type constraint

use Types::Standard −types;
# Normal way to validate a reference to a string.
#
ScalarRef−>of( Str )−>assert_valid( \ "foo" );
use Types::Standard::ScalarRef StrRef => { of => Str },
# Exported shortcut
#
assert_StrRef \ "foo";

STATUS

This module is not covered by the Type−Tiny stability policy.

DESCRIPTION

This is mostly internal code, but can also act as an exporter utility.

Exports

Types::Standard::ScalarRef can be used experimentally as an exporter.

use Types::Standard 'Str';
use Types::Standard::ScalarRef StrRef => { of => Str };

This will export the following functions into your namespace:
"StrRef"
is_StrRef( $value )
assert_StrRef( $value )
to_StrRef( $value )

Multiple types can be exported at once:

use Types::Standard −types;
use Types::Standard::ScalarRef (
IntRef => { of => Int },
StrRef => { of => Str },
);
assert_IntRef \42; # should not die

It's possible to further constrain the reference using "where":

use Types::Standard::ScalarRef MyThing => { of => Str, where => sub { ... } };