Don't use \, use [] 

my $arr_ref = [ grep /[[:alpha:]]/, keys %h ] ;

[download]

jeffa

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)

In reply to Re: need an array ref from grep by jeffa
in thread need an array ref from grep by jeanluca

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