c*r
2 楼
They are different in nature. One is contructor, the other
is an operator.
Copy ctor initialize the object, while assignment operator
modifies the existing object.
ClassA X = Y; //need copy ctor for ClassA.
ClassA X;
X = Y; //need assignment operator.
【在 q*c 的大作中提到】
: 我怎么觉得定义了 = 就不需要 copy ctor 了呢？这两个不是重复了吗？
: 那个高手解释解释， 多谢。
is an operator.
Copy ctor initialize the object, while assignment operator
modifies the existing object.
ClassA X = Y; //need copy ctor for ClassA.
ClassA X;
X = Y; //need assignment operator.
【在 q*c 的大作中提到】
: 我怎么觉得定义了 = 就不需要 copy ctor 了呢？这两个不是重复了吗？
: 那个高手解释解释， 多谢。
q*c
3 楼
ft...thanks. make a lot sense.
I only consider class A = B case..
【在 c*r 的大作中提到】
: They are different in nature. One is contructor, the other
: is an operator.
: Copy ctor initialize the object, while assignment operator
: modifies the existing object.
: ClassA X = Y; //need copy ctor for ClassA.
: ClassA X;
: X = Y; //need assignment operator.
I only consider class A = B case..
【在 c*r 的大作中提到】
: They are different in nature. One is contructor, the other
: is an operator.
: Copy ctor initialize the object, while assignment operator
: modifies the existing object.
: ClassA X = Y; //need copy ctor for ClassA.
: ClassA X;
: X = Y; //need assignment operator.
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