The earlier excellent answers have already answered your question.

The best description of the why behind Perl context that I have seen is the free Modern Perl book. I encourage you to read the short opening The Perl Philosophy chapter, which contains a clear description of contexts in Perl. Especially note the "Numeric, String, and Boolean Context" section.

See also: Definition of numerically equal and rationale for 'you' == 'me'

In reply to Re: How come undef eq '' ?? by eyepopslikeamosquito
in thread How come undef eq '' ?? by tmharish

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