$ perl -lwe 'print "two" == "two"' Argument "two" isn't numeric in numeric eq (==) at -e line 1. Argument "two" isn't numeric in numeric eq (==) at -e line 1. 1

So it returns a true value.

But that's because Perl tries to convert strings to numbers in order to do the numeric conversion. "two" has no obvious numeric equivalent so Perl uses zero.

Perl rarely dies because it finds data in the wrong format. It tries hard to do what it thinks you want to do. This is usually seen as a feature.

If it's essential that your program only compares actual numbers, then you should check them before you do the comparison.

--
<http://www.dave.org.uk>

"The first rule of Perl club is you do not talk about Perl club."
-- Chip Salzenberg


In reply to Re: == and != don't work as expected by davorg
in thread == and != don't work as expected by esharris

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.