[英]Instantiate object and pass its name to constructor using c++ macro
讓我們說
Class A{
A(string name){
....
}
}
所以當 object 創建時:
A objectNumber324 = new A("objectNumber324");
A objectNumber325 = new A("objectNumber325");
在我的情況下,由於 object 名稱很長,我正在尋找宏來將該代碼簡化為:
CreateA(objectNumber325)
這里有一些討論如何將變量名傳遞給function 。 但這並不完全相同,因為我想創建 object 並將其名稱傳遞給構造函數。
#include <string>
#include <iostream>
#define CreateA(name) \
A* name = new A(#name)
// With type
#define CREATE_WITH_TYPE(type, name) \
type* name = new type(#name)
// With name decoration
#define CREATE_WITH_DECO(type, name) \
type* my_##name = new type(#name)
class A {
public:
A(std::string name){
std::cout << name << " created.\n";
}
};
int main() {
// example
CreateA(objectNumber325);
CREATE_WITH_TYPE(A, objectNumber324);
CREATE_WITH_DECO(std::string, a_string);
delete objectNumber324;
delete objectNumber325;
delete my_a_string;
}
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