C++: Simple object assignment means copying. This is different from Java!
整理自:Thinking in C++
整理自:Thinking in C++
整理自:Thinking in C++
整理自:Thinking in C++
整理自:Thinking in C++
整理自:Thinking in C++
整理自:Thinking in C++
整理自:Thinking in C++
整理自 Thinking in C++