英语单词(同义词)

VC++宏VERIFY(Example)

英语单词

及物动词 vt.

1.证实，核实

All those facts verified his innocence.这一切事实都证明他是无辜的。

Subsequent events verified that his judgement was at fault.接着发生的事件证实了他的判断有误。

2.查对；核准

3.作证；鉴定；查证

I looked up the word in a dictionary to verify its spelling.

为了查证这个词的拼写方法，我从词典中查了一下这个词。

4.【计算机】检验，核对 5.【军械】核查；核实

同义词

证明,证实

substantiate corroborate validate prove authenticate

support confirm testify certify document

VC++宏VERIFY

#define VERIFY(exp) ASSERT(exp) 如果exp的值为真，继续执行；否则中止。

在VC MFC中VERIFY有另一个意思，其是一个判断的宏，MSDN中解释如下：

In the debug version of MFC, the VERIFY macro evaluates its argument. If the result is 0, the macro prints a diagnostic message and halts the program. If the condition is nonzero, it does nothing.

The diagnostic message has the form

assertion failed in file <name> in line <num> where name is the name of the source file and num is the line number of the assertion that failed in the source file.

In the release version of MFC, VERIFY evaluates the expression but does not print or interrupt the program. For example, if the expression is a function call, the call will be made.

Example

VERIFY can be used for things that should never fail, though you may want to make sure you can provide better error recovery. if the error can actually cause a crash in a production system. It is possible that GetDC() may fail, but the out-of-memory condition that causes it isn't likely. For a test application, this use of VERIFY() is fine. For any production code, this usage is dubious.get the display device context HDC hdc; VERIFY( (hdc = ::GetDC(NULL)) != NULL);give the display context back ::ReleaseDC(hdc);