Catching exceptions by value, reference or pointer [duplicate]

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catch exception by pointer i开发者_运维技巧n C++

What is the best way to catch an exception: by value, reference or pointer and why?

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You nearly always want to catch exceptions by (usually const) reference.

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By const reference. You can avoid object copying.

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You dont want to raise any more exceptions so catching by reference is best

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By reference, unless you're doing Windows programming, where exceptions are typically caught by pointer.