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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.

I've simplified the string a little, as japhy's regex eliminates whitespace, but the meat of what's happening is this:

$string = 'ShELoVeSMeshElOvEsmeNOtsHeloVeSMEShELOVESmeNOTShEloVesmEShe
+LovesMenoTsHELovEsMESHelOVeSmEnotSHeLOVeSMESHElOvESMENotSHeLoVesmEShE
+LovEsmENOTsHELOVEsmEsHELOveSMeNoTshELOVeSmesHElOVesmEnOTSheLOvEsMeshE
+LoVESmEnoTSHELOvEsM';

@strings = $string =~ /\w{8}/g;

for( @strings ){
  @string = split //;
  $bit = "";
  for( @string ){
    if( 'a' lt $_ ){
      $bit .= '1'
    }
    else{
      $bit .= '0'
    }
  }
  $letter = pack "B8", $bit;
  print "string: $_ bit: $bit letter: $letter\n";
}
[download]

I've left the print statement so the reader can better see the translation.

Output (truncated):

string: ShELoVeS bit: 01001010 letter: J
string: MeshElOv bit: 01110101 letter: u
string: EsmeNOts bit: 01110011 letter: s
string: HeloVeSM bit: 01110100 letter: t
string: EShELOVE bit: 00100000 letter:  
...
[download]

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
+" );
[download]

In reply to Re^2: I heart Perl by chargrill
in thread I heart Perl by japhy

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