std::regex_error
STD：：regex[医]误差
| Defined in header | | |
|---|---|---|
| class regex_error; | | (since C++11) |
定义抛出的异常对象类型以报告正则表达式库中的错误。
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继承图
成员函数
| (constructor) | constructs a regex_error object (public member function) |
|---|---|
| code | gets the std::regex_constants::error_type for a regex_error (public member function) |
继承自STD：例外
成员函数
| (destructor) virtual | destructs the exception object (virtual public member function of std::exception) |
|---|---|
| what virtual | returns an explanatory string (virtual public member function of std::exception) |
例
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#include <regex>
#include <iostream>
int main()
{
try {
std::regex re("[a-b][a"
}
catch (const std::regex_error& e) {
std::cout << "regex_error caught: " << e.what() << '\n';
if (e.code() == std::regex_constants::error_brack) {
std::cout << "The code was error_brack\n";
}
}
}
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产出：
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regex_error caught: The expression contained mismatched [ and ].
The code was error_brack
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