NAME
return::thence - return values from up above
SYNOPSIS
"return" has a seemed inconsistency when used within functions that take
a code block, such as "try" below.
use Try::Tiny;
# will return 1
sub foo {
try { return(2) };
return 1;
}
This module introduces a "return::thence" keyword which returns from
where you really mean:
# will return 2
sub bar {
try { return::thence(2) };
return 1;
}
DESCRIPTION
This module needs to perform a bit of guesswork to figure out where you
want to return from. Looking at the call stack, it returns from the
first named function (see Sub::Name, Sub::Identify) that was defined in
the same file and same package as its immediate caller.
"return::thence" doesn't especially differentiate between list and
scalar context.
sub baz { return::thence('a' .. 'z') };
my @baz = baz() # 'a' .. 'z'
my $baz = baz(); # 'z'
If you need more power, use Scope::Upper which is what this module uses
under the hood.
BUGS
Please report any bugs to
<http://rt.cpan.org/Dist/Display.html?Queue=return-thence>.
SEE ALSO
Scope::Upper.
AUTHOR
Toby Inkster <tobyink@cpan.org>.
COPYRIGHT AND LICENCE
This software is copyright (c) 2012 by Toby Inkster.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
DISCLAIMER OF WARRANTIES
THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.