问题描述
我想抛出一个异常,当我的C ++方法遇到一些奇怪,不能恢复。是否可以抛出 std :: string
指针?
I would like to throw an exception when my C++ methods encounter something weird and can't recover. Is it OK to throw a std::string
pointer?
这是我期待做的: / p>
Here's what I was looking forward to doing:
void Foo::Bar() {
if(!QueryPerformanceTimer(&m_baz)) {
throw new std::string("it's the end of the world!");
}
}
void Foo::Caller() {
try {
this->Bar(); // should throw
}
catch(std::string *caught) { // not quite sure the syntax is OK here...
std::cout << "Got " << caught << std::endl;
}
}
推荐答案
是。 是基本异常类在C ++标准库中。你可能希望避免使用字符串作为异常类,因为它们自己在使用过程中可能会抛出异常。如果发生这种情况,您会在哪里?
Yes. std::exception
is the base exception class in the C++ standard library. You may want to avoid using strings as exception classes because they themselves can throw an exception during use. If that happens, then where will you be?
boost有一个很好的有关异常和错误处理的良好风格。这是值得一读的。
boost has an excellent document on good style for exceptions and error handling. It's worth a read.
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