Re: question about private member
"Bill" <Bill_NOSPAM@comcast.net> wrote in message
<firstname.lastname@example.org> wrote in message
String & operate=(const String *other)
in the above calss, why memeber function can access the object other's
according to Principle of Encapsulation ,a boject can not access other
object's private memeber.
do anyone give me any explanation ?
thanks in advance
Because it's a member of the same class. It works this way because it
would be too difficult (or impossible) at compile time to determine which
type of object a pointer in a method was pointing to (IIRC, from Bjarne
Stroustrup's fine book).
By "which type", of course, I meant the invoking object or the one in the
parameter list, or some other object of the same type. I hope that helps.
It's not that it "should" be this way--it's that the alternatives, in view
of the implementation of the language translator, leave few choices.
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