Re: I heart Perl


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Re: I heart Perl

by chargrill (Parson)

on Feb 14, 2006 at 23:37 UTC ( [id://530258]=note: print w/replies, xml )

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in reply to I heart Perl

Beautiful!

And because it's only one statement (one 'variable' plus a wicked /x'd regex) perl -MO=Deparse doesn't even begin to shed any light on this!

$ perl -MO=Deparse valentine.pl
"Sh         ELoV\n   eSMeshEl     OvEsmeNO\n  tsHeloVeSM   EShELOVESm\
+n eNOTShEloVes mESheLovesMe\nnoTsHELovEsMESHelOVeSmEnotS\nHeLOVeSMESH
+ElOvESMENotSHeLo\n VesmEShELovEsmENOTsHELOVE\n  smEsHELOveSMeNoTshELO
+Ve\n   SmesHElOVesmEnOTSheLO\n    vEsMeshELoVESmEnoTS\n     HELOvEsM"
+ =~ /(((\w
      )\W*(?{$^R.(0+(
       q{a}lt$3))}))
        {8}(?{print
         +pack"B8"
          ,$^Rand
           ""}))
            +/x;
valentine.pl syntax OK
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/me waits for the vote fairy to give him some more votes this evening

--chargrill

$/  =  q#(\w)#  ;  sub  sig { print scalar reverse  join  ' ',  @_  } 
+ sig
map { s$\$/\$/$\$2\$1$g && $_ } split( ' ', ",erckha rlPe erthnoa stJu
+" );
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Re^2: I heart Perl
by chargrill (Parson) on Feb 15, 2006 at 16:17 UTC

I'm still puzzling through how japhy got from perlre's definition of (?{ ... }) to his use of it... but I can at least demonstrate what's happening.

Read more... (2 kB)

Very nice! This will certainly inspire me to wrap my head around this use of (?{...}) a bit better. Or a lot better :)

--chargrill

$/  =  q#(\w)#  ;  sub  sig { print scalar reverse  join  ' ',  @_  } 
+ sig
map { s$\$/\$/$\$2\$1$g && $_ } split( ' ', ",erckha rlPe erthnoa stJu
+" );
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