Calling return ends the foreach loop. Replace the loop with the marked line (and try the whole script to test): 
#!/usr/bin/perl
use warnings;
use strict;
use feature qw{ say };

sub date_list {
    my @mults =qw( 2010-01-01 2010-01-02 2010-01-03 );
    return map { ($_) x 10 } @mults;                 # <--- HERE
}
say for date_list('2014-01-01', '2014-01-10');

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لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

In reply to Re: Generate list with array elements repeated x times by choroba
in thread Generate list with array elements repeated x times by Anonymous Monk

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