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in reply to How to juggle between two arrays that are not same size

use Data::Dumper; @Names=qw(A B C); @FullRecord=qw(A_1 D_4 C_3 F_6 B_2); @name_presence{@Names} = (); @DesiredRecord = grep { exists $name_presence{(split /_/)[0]} } @FullRecord; print Dumper \@DesiredRecord; __END__ $VAR1 = [ 'A_1', 'C_3', 'B_2' ];