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Re: STDOUT of here

by jdalbec (Deacon)
on Mar 25, 2005 at 04:53 UTC ( #442283=note: print w/replies, xml ) Need Help??

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  1. or download this
    #!/usr/bin/perl
    STDOUT; # '???';
    ...
    { *BEING = BEGIN } # { *BEING = 'BEGIN'; }
    { END } # {sub END ; ;};
    STDERR; # '???';
    
  2. or download this
    #!/usr/bin/perl
    { # {
    ...
        } # } ;
    } # }
    { *BEING = BEGIN } # { *BEING = 'BEGIN'; }
    
  3. or download this
    #!/usr/bin/perl
    { # {
    ...
            } # }
        } # } ;
    } # }
    
  4. or download this
            BEGIN { # sub BEGIN {
                $SUB = sub { # $SUB = sub {
    ...
        sub ::END { print " " } # sub END { print ' '; }
    
        END { print "hacker," } # sub END { print 'hacker,'; }
    

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[Lady_Aleena]: Why does grep(/.*$in.*/, @my_modules) work but grep { $_ =~ /.*$in.*/; $_ } @my_modules not work? What did I do wrong in the second?
[tobyink]: Why are you returning $_ n your grep block? You should return a boolean.
[tobyink]: *in your grep block
[tobyink]: You can use grep { $_ =~ /.*$in.*/; } @my_modules but why not stick to grep(/.*$in.*/, @my_modules)? (The latter is faster.)
[shmem]: Lady_Aleena, in the first example grep evaluates the result from grep and if true, returns $_. In the second, it always returns $_
[shmem]: ..the result from the pattern match
[Lady_Aleena]: tobyink, I did after I failed to get the BLOCK to work. I can't seem to get my brain around grep BLOCK, though I'm okay with grep EXPR.

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