RFC 228 (v1) Add memoize into the standard library

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=head1 TITLE

Add memoize into the standard library

=head1 VERSION

  Maintainer: Adam Turoff <[email protected]>
  Date: Sep 14 2000
  Mailing List: [email protected]
  Number: 228
  Version: 1
  Status: Developing

=head1 ABSTRACT

Caching through memoization is a very useful construct.  It should be a 
standard module.

=head1 DESCRIPTION

Memoization is a very useful technique to transparently cache 
function return values.  It can be used to quickly optimize 
recursive functions, or functions that take a long time to
execute (such as gethostbyname).  

A version of Memoize.pm should be added into the Perl6 standard
library, and it should be added as a pragmatic module (i.e. memoize.pm).

Adding Memoize plugins (Memoize::Expire, etc.) into the standard library
is a separate discussion.

=head1 MIGRATION ISSUES

None.

=head1 IMPLEMENTATION

Add memoize into the perl6 source tarball, as a pragmatic module.

=head1 REFERENCES

Memoize.pm  http://search.cpan.org/search?dist=Memoize

MiniMemoize from TPJ: http://www.plover.com/~mjd/perl/MiniMemoize/memoize.html