What does undef mean?
Undef means (programming) Abbreviation of undefined..
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Pronunciation varies by accent · adjective
(programming) Abbreviation of undefined..
Use undef when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Undef means (programming) Abbreviation of undefined..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use undef where its definition matches the intended context.
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