in reply to if,if and again,if

You can try a data-driven approach: 

my @matchers = (
    qr/(Lz0|PLATO)/i, 'Apps',
    qr/(SKIDROW|POSTMORTEM|RELOADED|THETA|TiNYiSO|HI2U|TE|FLT|PROPHET|
+Unleashed|OUTLAWS|ALiAS|JAGUAR)/i, 'Games',
   ...
);
for (my $idx = 0; $i < @matchers; $i += 2) {
   if ($release_name =~ $matchers[$i]) }
      $category = $matchers[$i + 1];
      print "[INFO] Category: $category";
      last;  # stop after the first category was found
   }
}
# code not tested

[download]
Perl 6 - the future is here, just unevenly distributed

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Re^2: if,if and again,if
by Tanktalus (Canon) on Aug 23, 2012 at 17:57 UTC

    Data-driven approaches FTW!

    Though I'd be tempted to do things a bit more perlishly (at least for my own definition of perlish): 

    my @matchers = (
  [ qr/(Lz0|PLATO)/i => 'Apps' ],
  ...
);
for my $check (@matchers) {
  if ($release_name =~ $check->[0]) {
    $category = $check->[1];
    print "[INFO] Category: $category\n";
    last;
  }
}

    [download]
    Actually, a bit more perlish, IMO, would be to replace that for loop altogether: 
    use List::Util qw(first);
my $category = map {
  $_ ? $_->[1] : undef;
} first {
  $release_name =~ $_->[0];
} @matchers;
if ($category)
{
  print "[INFO] Category: $category\n";
}
else
{
  print "[ERROR] Unrecognised release type: $release_name\n";
}

    [download]
    But maybe that's just me. :-)

[reply]
[d/l]
[select]

      If we go all perlish, I'd get rid of the ugly map with a ternary :-). Either 

      my $category = first { ... } ... ;
if ($category) {
    $category = $category->[1];
    print "[INFO] Category: $category\n";
}

      [download]

      Or if you insist on a map on a one-element list, write it as 

      map $_->[1],
grep $_,
first { .... } ...;

      [download]

      IMHO several simple operations are easier to read than a few complicated ones.

      Perl 6 - the future is here, just unevenly distributed
[reply]
[d/l]
[select]
Re^2: if,if and again,if
by cesapun (Acolyte) on Aug 21, 2012 at 10:54 UTC

    Many thanks.That works.

    Close this.
[reply]

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