Http://www.cnblogs.com/BlueTzar/articles/1223313.html
-------------------------------------------------- C ++ copy constructor (deep copy, light copy)
For common objects, copying between them is very simple, for example:Int A = 88;Int B
copying objects in C + + is like cloning, which quickly replicates multiple identical objects with an existing object. In general, the following three scenarios will use replication for objects:(1) Create a new object and initialize the new object
1. Deep copy and shallow copyA copy is usually referred to as copy or Clone (clone), and the copy of the object is a new object that duplicates an "exact" one from an existing object. Although they are all copied objects, different methods of
The following is a deep, shallow copy defined in C + +
When you initialize another newly constructed object with a custom class type Object that has already been initialized, the copy constructor is automatically called. In other words, the
1. Deep copy and shallow copyA copy is usually referred to as copy or Clone (clone), and the copy of the object is a new object that duplicates an "exact" one from an existing object. Although they are all copied objects, different methods of
Read the instructions: For the previous code can not understand the friend, you may jump to the last to see the summary, and then look back at the above content, or there will be the feeling of the enlightened.Development Run Environment: Visual
Copying objects in C ++ is like "Cloning". Using an existing object, you can quickly copy multiple identical objects. Generally, object replication is used in the following three cases:
(1) create a new object and initialize the new object with
The deep-seated representation of C # Common type systems and variables in the transfer of deep copy shallow copy functionsIn the programming encountered some unexpected anomalies, tracking found that the C # variable in memory of the performance of
Perhaps many beginners in C + + know what a constructor is, but they are unfamiliar with the copy constructor (copy constructor). For me, there's not much chance of using a copy constructor when writing code, but that doesn't mean that the copy
"Under what circumstances will a copy constructor in C + + be used: "
1 to construct another new object with existing objects of the same kind
2 when the formal parameter of a function is the object of the class, this function is called, the copy
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