Or the regex option 
my @ar = qw(foo 19600326 bar);
$ar[1] =~ s{^(\d{4})(\d{2})(\d{2})\z}($1-$2-$3);
print $ar[1], $/;

__output__

1960-03-26

[download]

HTH

_________
broquaint

In reply to Re: splitting an array element by broquaint
in thread splitting an array element by Anonymous Monk

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