使用“这个” C ++中的关键字
问题描述:
在C ++中,关键字this通常被省略?例如:
In C++, is the keyword "this" usually omitted? For example:
Person::Person(int age) {
_age = age;
}
而不是:
Person::Person(int age) {
this->_age = age;
}
答
并通常省略。它可能需要访问变量,当它们被覆盖在范围内,虽然:
Yes, it is not required and is usually omitted. It might be required for accessing variables after they have been overridden in the scope though:
Person::Person() {
int age;
this->age = 1;
}
此外:
Person::Person(int age) {
_age = age;
}
如果您需要具有相同名称的初始化程序,请使用以下符号:
It is pretty bad style; if you need an initializer with the same name use this notation:
Person::Person(int age) : age(age) { }