clone

深拷贝Or浅拷贝

倖福魔咒の 提交于 2020-03-09 12:03:10
个人理解: 深拷贝和浅拷贝同样是重写Object的Clone方法,这里必须要重写,因为Object的Clone方法是Protected类型的,在本类无法访问基类受保护的方法。深拷贝和浅拷贝意义基本相同,只是深拷贝相对浅拷贝来说拷贝的层次要深,深拷贝对类引用的类也进行了拷贝,也就是引用的类也实现了Clone方法,没有彻底的深拷贝,而浅拷贝当前对象不同,而引用的对象还是指向同一个内存地址。 例如下面Person类: public class Person implements Cloneable{ private int age ; private String name; public Person(int age, String name) { this.age = age; this.name = name; } public Person() {} public int getAge() { return age; } public String getName() { return name; } @Override protected Object clone() throws CloneNotSupportedException { return (Person)super.clone(); } } 实现Cloneable接口, Person p = new Person

Clone() vs Copy constructor- which is recommended in java [duplicate]

谁说我不能喝 提交于 2020-02-08 13:16:12
问题 This question already has answers here : clone() vs copy constructor vs factory method? (10 answers) Closed 4 years ago . clone method vs copy constructor in java. which one is correct solution. where to use each case? 回答1: Clone is broken, so dont use it. THE CLONE METHOD of the Object class is a somewhat magical method that does what no pure Java method could ever do: It produces an identical copy of its object. It has been present in the primordial Object superclass since the Beta-release

Clone() vs Copy constructor- which is recommended in java [duplicate]

拜拜、爱过 提交于 2020-02-08 13:15:48
问题 This question already has answers here : clone() vs copy constructor vs factory method? (10 answers) Closed 4 years ago . clone method vs copy constructor in java. which one is correct solution. where to use each case? 回答1: Clone is broken, so dont use it. THE CLONE METHOD of the Object class is a somewhat magical method that does what no pure Java method could ever do: It produces an identical copy of its object. It has been present in the primordial Object superclass since the Beta-release

Select Onchange with ajax

蹲街弑〆低调 提交于 2020-02-07 15:05:05
问题 i have problem with change by ajax. this is my code : $(document).ready(function() { addBarang(); }); function addBarang() { var new_barang = $(".hidden_input").find(".barang_in").clone().addClass("barang_in_clone"); $(".target_clone:last").append(new_barang); $(".barang_in_clone:last").find("input[name=show]").val(''); // $(".barang_in_clone:has(select)").addClass("select2"); } $('body').on('click', '.btn_kurangi_barang', function() { $(this).closest('.barang_in_clone').remove(); }); /

Select Onchange with ajax

旧巷老猫 提交于 2020-02-07 15:04:35
问题 i have problem with change by ajax. this is my code : $(document).ready(function() { addBarang(); }); function addBarang() { var new_barang = $(".hidden_input").find(".barang_in").clone().addClass("barang_in_clone"); $(".target_clone:last").append(new_barang); $(".barang_in_clone:last").find("input[name=show]").val(''); // $(".barang_in_clone:has(select)").addClass("select2"); } $('body').on('click', '.btn_kurangi_barang', function() { $(this).closest('.barang_in_clone').remove(); }); /

Assignment Operator Overloading Java

我们两清 提交于 2020-02-05 07:08:25
问题 Im having trouble figuring out how to implement the equivalent of overloading the assignment operator in C++ to Java. I know there is no such thing, but I need to simulate it. I've tried overriding the Clone() function, but no luck. Any ideas? Below is my main Queue p = new Queue(); Queue q = new Queue(); p.enqueue('a'); p.enqueue(9); p.enqueue(10); p.enqueue(310); p.enqueue(8); q = p; System.out.print(p); And here is the clone function public void Clone(Queue other) throws Throwable { System

How can I copy a vector to another location and reuse the existing allocated memory?

末鹿安然 提交于 2020-02-01 04:44:06
问题 In C++, to copy the contents of a vector to another vector we use the assignment operator dest = src . However, in Rust src would be moved into dest and no longer usable. I know the simplest answer is to do dest = src.clone() (for the sake of this question we'll assume T in Vec<T> is Clone ). However - if I'm understanding correctly - this creates a brand new third vector with the copied contents of src and moves it into dest , throwing away dest 's dynamically allocated array. If this is

getComputedStyle of a clone element which is not in the dom

ぃ、小莉子 提交于 2020-01-31 18:27:11
问题 I have a html page like; <div id="cloneDiv"> <h1> <a href="">ASUS Vivotab Smart Black Office 2013 H&S ME400C-C2-BK 10.1-Inch 64GB Tablet (Black)</a> </h1> <div id="fordBackgroundImage" style="display: inline-block; background-position: center center; width: 1200px; height: 565px; background-image: url('http://www.ford.com/ngbs-services/resources/ford/edge/2013/npcolorizer/edg13_ingotsilver.jpg'); background-repeat: no-repeat; background-attachment: scroll; position: relative;"> <div style=

getComputedStyle of a clone element which is not in the dom

流过昼夜 提交于 2020-01-31 18:26:21
问题 I have a html page like; <div id="cloneDiv"> <h1> <a href="">ASUS Vivotab Smart Black Office 2013 H&S ME400C-C2-BK 10.1-Inch 64GB Tablet (Black)</a> </h1> <div id="fordBackgroundImage" style="display: inline-block; background-position: center center; width: 1200px; height: 565px; background-image: url('http://www.ford.com/ngbs-services/resources/ford/edge/2013/npcolorizer/edg13_ingotsilver.jpg'); background-repeat: no-repeat; background-attachment: scroll; position: relative;"> <div style=

jquery form advance form cloning

旧时模样 提交于 2020-01-26 04:09:05
问题 How to make a form where it can be added rows on clicking the ADD ROW link and can be deleted while click remove. Also i have a dropdown list in my form which has following options 1. ---Select--- by default 2. Asset 3. No Asset Now when a user selects Asset a dynamic form show appear right below the current row. The dynamic box should have this fields 1. Asset Type: One dropdown list (whose values should be populated with ajax) 2. Name: A simple input text field 3. Serial No: Text field 4.