Beefy Boxes and Bandwidth Generously Provided by pair Networks
Pathologically Eclectic Rubbish Lister

Comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

You can dispense with the need for an input scalar by opening a filehandle on a reference to a HEREDOC. Also, there's no need to initialise your output scalar to the empty string as any previous content will be clobbered by the '>' in the open.

knoppix@Microknoppix:~$ perl -e ' > open my $inFH, q{<}, \ <<EOD or die qq{open: << HEREDOC: > $!\n}; > line 1 > line 2 > line 3 > EOD > > my $out = qq{some rubbish here\n}; > open $outFH, q{>}, \ $out or die qq{open: > scalar: $!\n}; > > while ( <$inFH> ) > { > print $outFH uc; > } > > print $out;' LINE 1 LINE 2 LINE 3 knoppix@Microknoppix:~$

I hope this is of interest.



In reply to Re^2: Modify a txt file by johngg
in thread Modify a txt file by la

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, 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?

    What's my password?
    Create A New User
    and all is quiet...

    How do I use this? | Other CB clients
    Other Users?
    Others studying the Monastery: (7)
    As of 2018-06-20 07:17 GMT
    Find Nodes?
      Voting Booth?
      Should cpanminus be part of the standard Perl release?

      Results (116 votes). Check out past polls.