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TorgoX (1933)


"Il est beau comme la retractilité des serres des oiseaux rapaces [...] et surtout, comme la rencontre fortuite sur une table de dissection d'une machine à coudre et d'un parapluie !" -- Lautréamont

Journal of TorgoX (1933)

Friday February 22, 2002
01:34 PM

"for" for aliasing

[ #3045 ]
Dear Log,

My for trick of the day, with HTTP::Response objects:

  for my $c (${ $response->content_ref }) {
     $c =~ ...stuff...;
     $c =~ ...stuff...;
     $c =~ ...stuff...;

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  • Why not use $_? That way you can leave off all the $c =~ bits. Just use for(...) instead of for my $c (...).

    Esli epei eto cumprenan, shris soa Sfaha.
    Aettot ibrec epesecoth, spakhea scrifeteis.

    • well, the actual block in the foreach block involved more stuff going on, and calls to different subs. And I'm never happy calling subs when I have something important in $_ -- because if the subs later are rewritten to incidentally clobber $_, I'll have a hard time figuring out the resulting bug. And I'm just not that big into assigning/aliasing to $_ in general, except for tiny tiny things like:
      for($k,$v) {tr/\cm\cj//d; s/^\s+//; s/\s+$//; }