A hash slice variation:
$H{$_}++ for split '', $str;
if (grep $_, @H{a..z,A..Z}) {
...
}
Or an array slice variation:
$A[ord $_]++ for split '', $str;
if (grep $_, @A[map ord, a..z,A..Z]) {
...
}
Update: or forget the slices (duh):
$H{$_}++ for split '', $str;
if (grep $H{$_}, a..z, A..Z) {
...
}
$A[ord $_]++ for split '', $str;
if (grep $A[ord $_], a..z, A..Z) {
...
}
Update #2: using POSIX:
use POSIX;
if ( grep { isalpha $_ } split '', $str ) {
...
}
Add salt, quotes, and strict to taste.
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