I have encountered three forms of macro call： macro! {...} macro! (...) macro! [...] they passed the compiler and did the same thing. So are they the three identical forms to call a macro ? If not, could you explain for me ? and which one should I prefer ?

Braces, square brackets and parentheses in macro-call?

sfackler July 22, 2017, 3:32pm 7

No, the macro doesn't know if it was called with [] {} or ().

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