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If instead of using array indexes you use the actual array values is saves the bother of having to save the current outer loop value. Anonymonk makes a useful point about meaningful variable names.

$ perl -Mstrict -Mwarnings -E ' my @nums = qw{ 1 2 3 }; my @ltrs = qw{ a b c }; my $iters = 2; for my $iter ( 1 .. $iters ) { for my $num ( @nums ) { for my $ltr ( @ltrs ) { say qq{$num$ltr}; } } }' 1a 1b 1c 2a 2b 2c 3a 3b 3c 1a 1b 1c 2a 2b 2c 3a 3b 3c $

Another way to do this would be to localise the list separator and use glob and the list multiplier in a do block.

$ perl -Mstrict -Mwarnings -E ' my @nums = qw{ 1 2 3 }; my @ltrs = qw{ a b c }; my $iter = 2; say for do { local $" = q{,}; ( glob qq{{@nums}{@ltrs}} ) x $iter; };' 1a 1b 1c 2a 2b 2c 3a 3b 3c 1a 1b 1c 2a 2b 2c 3a 3b 3c $

I hope this is of interest.

Cheers,

JohnGG


In reply to Re^2: Perl nested loop to print out two arrays n number of times in different patterns by johngg
in thread Perl nested loop to print out two arrays n number of times in different patterns by arty32l

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