How much memory do you have available? The following test case on my system uses 34 MB (according to top) after having filled the hash, and a total of 110 MB after having created the dump string.

#!/usr/bin/perl -w use strict; use Data::Dumper; my $key_ = '//programfiles/documents/data/lookup/script_auth_pap.h'; my $val_ = 'root\edit\perl\scripts\scripths\sec\inc\script_auth_pap.h' +; my $c = 0; my %hash; for (1..125000) { my $key = "$key_$c"; my $val = "$val_$c"; $c++; $hash{$key} = $val; } <>; # 34 MB my $dump = Dumper \%hash; <>; # 110 MB

In reply to Re^5: Constructing a hash - why isn't my regex matching anything by Anonyrnous Monk
in thread Constructing a hash - why isn't my regex matching anything by perl_mystery

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.