c**********e
发帖数: 2007 | 1 When can binary operators be declared as member functions?
a) when the left argument of a binary operator is an object of that class.
b) when the right argument of a binary operator is an object of that class.
c) when both arguments of a binary operator is an object of that class. |
a****o
发帖数: 686 | 2 a)
【在 c**********e 的大作中提到】
: When can binary operators be declared as member functions?
: a) when the left argument of a binary operator is an object of that class.
: b) when the right argument of a binary operator is an object of that class.
: c) when both arguments of a binary operator is an object of that class.
|
c**********e
发帖数: 2007 | 3 The answer is a). But why c) is not correct?
【在 a****o 的大作中提到】
: a)
|
M********5
发帖数: 715 | 4 c的限制太宽了
举一个很简单的例子，你定义一个BigInt，你的类应该是允许 BigInt + int的，而不
是只允许BigInt + BigInt的 |
