Sometimes, I wish for a boolean context... (It would be great for grep too.) Or maybe the character length should be stored in string variables?

I can't think of any replacement short of turning off the flag, calling length, then restoring it.

What's the problem with the current solution? 

require bytes;
sub emptystr(_) {
    no warnings 'uninitialized';
    return !bytes::length($_[0]);
}

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By the way, 

use bytes; 
no bytes;

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is equivalent to 

use bytes ();

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There's also similar 

require bytes;

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In reply to Re: Alternative to bytes::length() by ikegami
in thread Alternative to bytes::length() by creamygoodness

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