Beefy Boxes and Bandwidth Generously Provided by pair Networks
The stupid question is the question not asked
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
To explain what was going on here:

s/\s+/\t/g; is equivalent to $_ =~ s/\s+/\t/g;, so $line =~ s/\s+/\t/g; actually means $line = ($_ =~ s/\s+/\t/g); (The parentheses aren't actually necessary, but I wanted to make the precedence completely clear.)

In scalar context, a regex match or substitution (=~) returns the number of matches found/substitutions performed, so, to finally get to where that 2 comes from, $line =~ s/\s+/\t/g; changes all the groups of whitespace in $_ into tabs and sets $line to the number of substitutions which were performed. If you look at $_, you will find that it holds the value you wanted, since $line and $_ held the same value before the substitution was performed.


In reply to Re: Substituting white spaces with a tab changes my string into numeric value by dsheroh
in thread Substituting white spaces with a tab changes my string into numeric value by PerlPeer

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!
  • 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, 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, 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.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others lurking in the Monastery: (11)
    As of 2015-07-03 08:54 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









      Results (50 votes), past polls