[% setvar title Keep C, but make it work. %]

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Keep use less, but make it work.


  Maintainer: Simon Cozens <simon@brecon.co.uk>
  Date: 25 Sep 2000
  Mailing List: perl6-internals@perl.org
  Number: 303
  Version: 1
  Status: Developing


use less is the semi-humorous Perl 5 pragma which should give the interpreter hints as to how to make memory-speed tradeoffs. Make it actually do something in Perl 6.




use less should be renamed to use optimize for Perl 6, and memory-speed tradeoffs should be identified and the appropriate choice made; this is of especial merit when compiling to standalone executable. Of course, since we don't know what the memory-speed tradeoffs are going to be until we start coding, it's a bit hard to give a more detailed implementation suggestion.

optimize was chosen because then more fine-grained optimisations may be specified: see "Unrolling loops and tail recursion" for some examples.


RFC 302: Unrolling loops and tail recursion