Thanks for that - have never really used 
  use constant {...};

[download]
we usually do this at the top of the package 
 our $SKIPWORDS = {};

[download]
so I wonder if there is an overhead for use constant?

The thing I like about the inline/anon hashes is that all the logic and data is clearly seen in one place.

In this specific example, the package is 5000+ lines long, and the words() function because it starts with w... will end up near the end of the file - 5000 lines away from the skip and substitute words.

Will probably go with the use contant if there is no overhead - this func will get called a lot in an inner loop with anywhere up to a million times per run.

Thanks again, for the pointers,

Jeff

In reply to Re^2: Does Perl do constant anonymous hash creation optimisation? by jaa
in thread Does Perl do constant anonymous hash creation optimisation? by jaa

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.