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What does the "and" keyword mean in Objective-C?

I typed a comment in Xcode, but forgot the lead // . I noticed that and was highlighted as a keyword. I did a little Googling, but I can’t understand what it is doing (or even if it is a real keyword).

What does it mean?

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ios objective-c
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2 answers

It is synonymous with && . See iso646.h .

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This is not a keyword. Objective-C uses the same keywords as C, with optional keywords that always begin with "@".

EDIT: This question does not answer the original post (see Rob Napir succint's answer for this), but it emphasizes that the “and” is a macro in some standard library headers, not a reserved word.

Quote from standard C (C11, n1570), p. 58:

6.4.1 Keywords

keyword: one of auto, break, case, ... [list of words not including 'and']

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