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L<Examples| file:../examples/index.podlite>


L<Download |file:../download/index.podlite>


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=begin React :component<HeaderCol> :id<menu> 
=para L<Documentation|/doc/introduction>
=para L<Modules| /mods>
=para L<Examples| file:../examples/index.podlite>
=para L<Download |file:../download/index.podlite>
=para L<About|file:../about/index.podlite>
=para 🔍 K<⌘K>/K<ctrl-K>
=end React


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README

use v6.*;

class Tie::Hash:ver<0.0.8>:auth<zef:lizmat> {

    method EXISTS($) { die self.^name ~ " doesn't define an EXISTS method" }

    method CLEAR(*@args) {
        my @keys;

        my $key = self.FIRSTKEY;
        while $key.defined {
            push @keys, $key;
            $key = self.NEXTKEY($key);
        }
        self.DELETE($_) for @keys;
        ()
    }
    method UNTIE()   { }
    method DESTROY() { }
}



This module tries to mimic the behaviour of Perl's C<Tie::Hash> module
as closely as possible in the Raku Programming Language.


Tie::Hash is a module intended to be subclassed by classes using the
L<P5tie|tie()> interface.  It provides implementations of the C<CLEAR>,
C<UNTIE> and C<DESTROY> methods.  It also provides a stub for the C<EXISTS>
method, but one needs to supply an C<EXISTS> method for real C<exists>
functionality.  All other C<tie> methods should be provided.


Source can be located at: https://github.com/lizmat/Tie-Hash . Comments and
Pull Requests are welcome.


Re-imagined from Perl as part of the CPAN Butterfly Plan.


This library is free software; you can redistribute it and/or modify it under the Artistic License 2.0.


Hash

use v6.*;

class Tie::Array:ver<0.0.8>:auth<zef:lizmat> {
    method EXTEND($) { }
    method DESTROY() { }
    method CLEAR() { self.STORESIZE(0) }

    method UNSHIFT(*@args) { self.SPLICE(0,0,@args) }
    method SHIFT()  is raw {
        self.FETCHSIZE
          ?? self.SPLICE(0,1).AT-POS(0)
          !! Nil
    }

    method PUSH(*@args) {
        my int $sz = self.FETCHSIZE;
        self.STORE($sz++, @args.shift) while @args;
    }
    method POP() is raw {
        if self.FETCHSIZE -> $size {
            LEAVE self.STORESIZE($size - 1);
            self.FETCH($size - 1)
        }
        else {
            Nil
        }
    }
    method SPLICE(*@args) {
        my int $sz  = self.FETCHSIZE;
        my int $off = @args ?? @args.shift !! 0;
        $off += $sz if $off < 0;
        my int $len = @args ?? @args.shift !! $sz - $off;
        $len += $sz - $off if $len < 0;
        my @result;

        my int $i = $off - 1;
        push(@result, self.FETCH(++$i)) for ^$len;
        $off = $sz if $off > $sz;
        $len -= $off + $len - $sz if $off + $len > $sz;

        if @args > $len {
            # Move items up to make room
            my int $d = @args - $len;
            my int $e = $off + $len;
            self.EXTEND($sz + $d);
            loop (my int $i = $sz-1; $i >= $e; --$i) {
                self.STORE($i + $d, self.FETCH($i));
            }
        }
        elsif @args < $len {
            # Move items down to close the gap
            my int $d = $len - @args;
            my int $e = $off + $len;
            loop (my int $i =$off + $len; $i < $sz; ++$i) {
                self.STORE($i - $d, self.FETCH($i));
            }
            self.STORESIZE($sz - $d);
        }

        self.STORE($off + $_, @args[$_]) for ^@args;

        @result
    }

    method EXISTS($) { die self.^name ~ " doesn't define an EXISTS method" }
    method DELETE($) { die self.^name ~ " doesn't define an DELETE method" }
    method UNTIE()   { die self.^name ~ " doesn't define an UNTIE method"  }
}



This module tries to mimic the behaviour of Perl's C<Tie::Array> module
as closely as possible in the Raku Programming Language.


Tie::Array is a module intended to be subclassed by classes using the
</P5tie|tie()> interface.  It depends on the implementation of methods
C<FETCH>, C<STORE>, C<FETCHSIZE> and C<STORESIZE>.


The C<EXISTS> method should be implemented if C<exists> functionality is needed.
The C<DELETE> method should be implemented if C<delete> functionality is needed.
Apart from these, all other interfaces methods are provided in terms of
C<FETCH>, C<STORE>, C<FETCHSIZE> and C<STORESIZE>.


Source can be located at: https://github.com/lizmat/Tie-Array . Comments and
Pull Requests are welcome.


Array

The Raku Knowledge Base


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    =item2 L<Get started|file:../getting-started/getting-started.podlite>
    =item2 L<Why Raku?|/doc/language/faq#Why-should-I-learn-Raku-What's-so-great-about-it>
    =item2 L<Try Raku|https://glot.io/new/raku>
    =item2 L<Raku cheat sheet|https://github.com/Raku/mu/blob/master/docs/Perl6/Cheatsheet/cheatsheet.txt>
    =item2 L<empty|#>
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    =item2 L<Language References|file:../doc/reference.podlite>
    =item2 L<Type Reference| file:../doc/types.podlite>
    =item2 L<Miscellaneous| file:../doc/miscellaneous.podlite>
    =item2 L<FAQs (Frequently Asked Questions)|/doc/language/faq>
    =item2 L<Community|/doc/language/community>
    =item2 L<The list of all documents|file:../doc/index.podlite>

=item1 B<Resources>
    =item2 L<The Raku Guide|https://raku.guide/>
    =item2 L<Books |https://perl6book.com/>
    =item2 L<Rosetta Code | https://www.raku.org/community/rosettacode>

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    =item2 L<empty|#>
    =item2 L<empty|#>
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=item1 B<Learning>
    =item2 L<The Raku Guide|https://raku.guide/>
    =item2 L<Wikibook |https://en.wikibooks.org/wiki/Raku_Programming>
    =item2 L<Books |https://perl6book.com/>
    =item2 L<Rosetta Code | https://www.raku.org/community/rosettacode>
    =item2 L<Learn Raku in Y minutes|https://learnxinyminutes.com/docs/raku/>
    =item2 L<Golfing |https://github.com/AlexDaniel/raku-golf-cheatsheet>
=end nested
=begin nested :!nested

=item1 B<Explore>
    =item2 L<Raku Blog Aggregator|https://planet.raku.org/>
    =item2 L<Rakudo Weekly|https://rakudoweekly.blog/>
    =item2 L<The Weekly Challenge |https://perlweeklychallenge.org/>
    =item2 L<Raku Advent Calendar|https://raku-advent.blog/>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>

=end nested
=end React


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README

NAME

SYNOPSIS

DESCRIPTION

SEE ALSO

AUTHOR

COPYRIGHT AND LICENSE

Tie::Array v0.0.8

Authors

License

Dependencies

Test Dependencies

Provides

Documentation