So to be inefficient and avoid the temp variable (untested): 
@array1 = @array1[+grep 
                   { $array1[$_] =~ /keep these/ }
                   0 .. $#array1
                 ];
@array2 = @array2[+grep 
                   { $array1[$_] =~ /keep these/ }
                   0 .. $#array1
                 ];

[download]

-QM
--
Quantum Mechanics: The dreams stuff is made of

In reply to Re^3: Use grep with two arrays by QM
in thread Use grep with two arrays by lampros21_7

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