Throw () after the C ++ Function ()

When I saw the implementation of the cimage function, I found this stuff.

Inline hbitmap cimage: Detach () Throw()

It is a gentleman agreement between the function provider and the user, indicating that the function does not throw any exception.

The reason for this is the gentleman agreement, because internal implementation requires human intervention.

If throw occurs in a function that indicates throw:

1. If the internal throw something directly, the compiler will find and point out;

2. If a function that may throw something is called internally, the compiler cannot find it,ProgramWill be abort.

 

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Func () Throw (type), will throw some exception

Func () Throw (), not throw

Func () Throw (...), which may be any type of exception