Slightly cleaner: 
my @array2 = @array1;
s/\s+//g for (@array2);

[download]
Or in a single statement: 
my @array2 = map {(my $x = $_) =~ s/\s+//g; $x} @array1;

[download]
The main concern you must have when dealing with map and a regex is not destructing the original array unless you truly intend to. $_ is an alias to each element of the source array, so any modification of it modifies the original array. To avoid this we assign to a temporary lexical in the above map block. And then finally make sure to return the actual variable and not a count of the number of substitutions.

Personally, I'd probably just stick with your original code, as I kind of doubt that you truly need a second array with these crunched values. Instead simply add the "crunching" as part of the loop for whatever other processing that you intend to be doing. Whatever that may be.

- Miller

In reply to Re^2: array with s///g command by wind
in thread array with s///g command by convenientstore

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.