You've almost diagnosed the problem correctly, but not quite. When Perl turns the string "1,000" into a number, it does not think it is reading a list. What happens is that, since ',' is not a valid character in a number in Perl, the string-to-number conversion just stops when it gets to the comma. This would be the same as '1j000' or '1~000'.

You don't show where your numbers are coming from, but you can avoid this problem by removing the commas from your 'numbers' before you use them as numbers: $num =~ tr/,//d; Of course, it would be simpler to not put the commas there in the first place.

In reply to Re: Thousands separator - this is getting annoying by chipmunk
in thread Thousands separator - this is getting annoying by Anonymous Monk

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.