Re: bool or BOOL in MFC projects

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On Wed, 19 Dec 2007 11:02:55 -0500, David Wilkinson <no-reply@xxxxxxxxxxxx>
wrote:

Joseph M. Newcomer wrote:
But if(p) is a type violation.

Conversion of pointer to bool is an accepted feature of the C++
language. It is used, for example in the idiom

int i;
while (cin >> i)
{
// do something to i
}

(std::ios has conversion to void*, not to bool).

Ironically, the conversion to bool has more undesirable side effects than
the conversion to void*, mainly because bools can be used in arithmetic
expressions.

--
Doug Harrison
Visual C++ MVP
.

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