I like to use "for" for that kind of thing

Me too, but I have found do{} is more readable. For one thing, it saves you from your bug: Your version throws away the uppercase string and so prints just "goodbye todo el mondo". My version would look like this:

my $sBegin = "hello world";
my $sEnd;
for ($sEnd = $sBegin) {
  s/hello/goodbye/g;
  s/world/todo el mondo/;
  $_ = uc;
};

print $sEnd;

[download]

TIMTOWTDI, but I think do{} is the more readable here.

Update: I trust you. No problem. But the bug still illustrates how the void context makes the for loop slightly less readable here. Such a bug (update: or the more likely opposite bug) could not as easily occur in the do{} block.

print "Just another Perl ${\(trickster and hacker)},"
The Sidhekin proves Sidhe did it!

In reply to Re^3: Confessions of a back-alley map abuser by Sidhekin
in thread Confessions of a back-alley map abuser by dimar

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.