That comes from Perl (which was added at 5.12 however it originated from the Perl6 spec). See http://search.cpan.org/~jesse/perl-5.12.0/pod/perlop.pod#Yada_Yad

That comes from Perl (which was added at 5.12 however it originated from the Perl6 spec). See http://search.cpan.org/~jesse/perl-5.12.0/pod/perlop.pod#Yada_Yada_Operator http://search.cpan.org/~jesse/perl-5.12.0/pod/perlop.pod#Yad... And search for "yada" in the following links: - http://perldoc.perl.org/perlsyn.html http://perldoc.perl.org/perlsyn.html - http://perl6.org/archive/doc/design/apo/A12.html http://perl6.org/archive/doc/design/apo/A12.html