After reading posts, I realized my error in using split, so I rewrote and simplified to:

while ($_ = substr($foo,$i++,1)){
    if (++$_**2 == 0) {
        print "$foo Contains Alpha Characters\n";
        last;
    } 
}

[download]

This is better I think.

Cameron

UPDATE: I have updated the code with the suggestions offered by ambrus. Thanks for pointing that out...ambrus I reverted to the original code, and am posting the changes below.

Updated with ambrus suggestions: 
my $i = 0;
while (local $_ = substr($foo,$i++,1)){
    if (++$_ == 0) {
        print "$foo Contains Alpha Characters\n";
        last;
    } 
}

[download]


I optimized further:

while (++substr($foo,$i++,1) != 0){}

[download]
This breaks at an alpha char, and significantly increases the speed, but it is still ~3 times slower that initial solution.

In reply to Re: Challenge - Creative Way To Detect Alpha Characters by doowah2004
in thread Challenge - Creative Way To Detect Alpha Characters by Limbic~Region

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