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藤 吾郎
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NAME

B::Foreach::Iterator - Manipulates foreach iterators

VERSION

This document describes B::Foreach::Iterator version 0.07.

SYNOPSIS

        use B::Foreach::Iterator;

        foreach my $key(foo => 10, bar => 20, baz => 30){
                printf "%s => %s\n", $key => iter->next;
        }

DESCRIPTION

B::Foreach::Iterator provides functions that manipulate foreach iterators.

INTERFACE

Exported functions

iter(?$label)

Finds a foreach iterator, and returns it. You can supply a $label if necessary.

If no iterators are found, it dies.

Instance methods

$iterator->next()

Increases $iterator and returns its value.

$iter->peek()

Returns the value of the next iterator.

$iter->is_last()

Returns whether the foreach loop iteration is last or not.

$iter->label()

Returns the label of $iterator.

If $iterator has no labels, it returns undef.

DEPENDENCIES

Perl 5.8.8 or later, and a C compiler.

BUGS

No bugs have been reported.

Please report any bugs or feature requests to the author.

SEE ALSO

perlguts.

pp_hot.c for pp_iter().

cop.h for struct block_loop and struct context.

AUTHOR

Goro Fuji <gfuji(at)cpan.org>.

ACKNOWLEDGEMENTS

Thanks to Hans Dieter Pearcey(HDP) for his suggestions.

LICENSE AND COPYRIGHT

Copyright (c) 2009, Goro Fuji. Some rights reserved.

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.