func deepCopyJSON(src map[string]interface{}, dest map[string]interface{}) error { if src == nil { return errors.New("src is nil. You cannot read from a nil map") } if dest == nil { return errors.New("dest is nil. You cannot insert to a nil…

Make a deep copy of an undirected graph, there could be cycles in the original graph. Assumptions The given graph is not null DFS /* * class GraphNode { * public int key; * public List<GraphNode> neighbors; * public GraphNode(int key) { * this.key =…

Each of the nodes in the linked list has another pointer pointing to a random node in the list or null. Make a deep copy of the original list. /** * class RandomListNode { * public int value; * public RandomListNode next; * public RandomListNode rand…

今天在研究一个关于 Bitmap deep copy 的问题, 经过一系列的查询,在StackOverFlow上面找到了答案,遂记录下来: public static Bitmap DeepCopyBitmap(Bitmap bitmap)        {            try            {                Bitmap dstBitmap = bitmap.Clone(new Rectangle(0, 0, bitmap.Width, bitmap.Heig…

本文属原创,转载请注明出处:http://www.cnblogs.com/robinjava77/p/5481874.html   (Robin) Student package base; import java.io.Serializable; /** * Created by robin on 2016/5/11. * * @author robin */ public class Student implements Cloneable,Serializable{ private Str…

Python中对于对象的赋值都是引用,而不是拷贝对象(Assignment statements in Python do not copy objects, they create bindings between a target and an object.).对于可变对象来说,当一个改变的时候,另外一个不用改变,因为是同时的,也就是说是保持同步的. 此时不想让他们同步的话可以使用copy模块,copy.copy()浅拷贝,copy.deepcopy()深拷贝. 前者是对整个对象的拷贝,对…

在使用OpenCV的三维立体重建的库时,一个重要的步骤就是生成左右视图的差异图Disparity,而控制生成disparity的参数的类是cv::StereoBM,我们有时候需要拷贝一份cv::StereoBM,然后改变其中的参数值,但是如果用默认的等号‘=’来进行拷贝,其实是浅拷贝,如果改变拷贝项的参数值,原来的参数值也会跟着改变,所以我们需要自己写一个深拷贝的函数,如下所示: /** * Deep copy cv::StereoBM bm1 to bm2 */ void copy_bm(co…

1.深复制与浅复制的概念 ->浅复制(shallow copy)概念   在SDK Guides中(搜索copy),官方给出的浅复制概念为: Copying compound objects, objects such as collection objects that can contain other objects, must also be done with care. As you would expect, using the = operator to perform a co…

If you learned C++ carefully, you must have known something about the copy of object. For example, I defined a class called \(ABC\),and two variable \(x\) and \(y\) are \(ABC\)s. Like this: class ABC{ public: int a,b; }; int main(){ ABC x,y; x.a=;x.b…

NumPy学习(索引和切片,合并,分割,copy与deep copy) 目录 索引和切片 合并 分割 copy与deep copy 索引和切片 通过索引和切片可以访问以及修改数组元素的值 一维数组 程序示例 import numpy as np #索引与切片 array=np.arange(3,15) print(array) print(array[3])#数组下标为3的元素 print('\n') print(array[1:3])#取从下标1到下标3,不包括下标3 print(array[…