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Access and Printing of a LIST OF LISTS

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Access and Printing of a LIST OF LISTS

 # one element
 $LoL[0][0] = "Fred";

 # another element
 $LoL[1][1] =~ s/(\w)/\u$1/;

 # print the whole thing with refs
 for $aref ( @LoL ) {
     print "\t [ @$aref ],\n";
 }

 # print the whole thing with indices
 for $i ( 0 .. $#LoL ) {
     print "\t [ @{$LoL[$i]} ],\n";
 }

 # print the whole thing one at a time
 for $i ( 0 .. $#LoL ) {
     for $j ( 0 .. $#{ $LoL[$i] } ) {
         print "elt $i $j is $LoL[$i][$j]\n";
     }
 }

Source: Perl Data Structures Cookbook
Copyright: Larry Wall, et al.

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