Overloaded bjects and tied variables can be false, and they're none of those.

An expression is false if it stringifies to any of the following:

That includes undef and numerical zero. (It might fail for very tiny floats and weird dualvars, but it gives a good idea.)

In reply to Re^3: String comparison "\x00" vs. "". by ikegami
in thread String comparison "\x00" vs. "". by asprillia

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