[英]How to create a macro for a templated function in c++
I want to create a macro for a template function我想为模板函数创建一个宏
something on the lines of一些关于
#define CHECK_MIN(T)(value, target) checkmin(T value, T target) \
checkmin<T>(T val, T target, __FUNCTION__, __LINE__)
template<typename T> checkmin(T val, T target, const char* functionName, long lineNumber)
{
// Check if the val is less than target
// Construct a std::string using the function name and line name
// throw std:: exception passing the string constructed above.
}
I am not able to get the syntax to achieve this.我无法获得实现此目的的语法。 Any ideas?有任何想法吗?
You can do it by following way:您可以通过以下方式做到这一点:
#include <iostream>
using namespace std;
template<typename T>
void checkmin(T val, T target, const char* functionName, long lineNumber)
{
// Check if the val is less than target
// Construct a std::string using the function name and line name
// throw std:: exception passing the string constructed above.
}
#define CHECK_MIN(value, target) \
checkmin(value,target, __FUNCTION__, __LINE__);
int main() {
/*Not using new in object definitions so I don't have to delete them afterwards since pointers don't stay in memory*/
CHECK_MIN(5,6);
return 0;
}
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