clone | 易学教程

Jquery - Advanced .clone()

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问题 I started from here jQuery clone chained selects The answers by Paulj Version 1: http://jsfiddle.net/m4JTQ/2/ Version 2 (this is a modified version getting rid of the i iterator: http://jsfiddle.net/Zf7xb/1/ It works perfectly. But now im looking for more dificult. The new scenario is: ----Group1 : [+] [-]------------------------------- ----Subgroup : [+] [-] ------------ --Chile | Santiago | Chiñihue --Argentina | San Juan | Rawson --Argentina | San Juan | Rawson (cloned) -------------------

How to Clone Control in WPF?

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问题 I want to clone a WPF Control ( XamDataGrid ) I know these ways: Clone Problem: Control is not Cloneable Serialize & Deserialize in binary format Problem: Control is not serializable Serialize as XML Problem: control contains images and Images are not serializable in xml serialization Do you have any valid workarounds ? 回答1: Here is a workaround http://heskandari.blogspot.com/2009/07/infragistics-wpf-reporting.html 来源： https://stackoverflow.com/questions/2572066/how-to-clone-control-in-wpf

git clone, upload-pack out of memory

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问题 I have a git repo that stores only PDFs as binaries, in total there are 70 PDFs totalling 130MB, a few of them are large (about 15MB). When I try to clone the repo to my work computer I get the error: remote: Counting objects: 93, done. remote: fatal: Out of memory, malloc failed (tried to allocate 36864964 bytes) error: git upload-pack: git-pack-objects died with error. fatal: git upload-pack: aborting due to possible repository corruption on the remote side. remote: aborting due to possible

Java: clone() and equality checks

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问题 Perhaps I don't understand how clone() works. Shouldn't the return value equal the caller? int[] nums = new int[] {0, 1, 2}; int[] list = nums.clone(); nums.equals(list); //returns false. Why? for (int ket = 0; ket < list.length; ket++) { System.out.println(list[ket] == nums[ket]); //prints out true every time } list == nums //false 回答1: Because the equals implementation of array is the same as Object which is public boolean equals( Object o ) { return this == o; } See this also this question

Force image caching with javascript

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问题 I am trying to clone an image which is generated randomly. Although I am using the exact same url a different image is load. (tested in chrome and firefox) I can't change the image server so I am looking for a pure javascript/jQuery solution. How do you force the browser to reuse the first image? Firefox: Chrome: Try it yourself (maybe you have to reload it several times to see it) Code: http://jsfiddle.net/TRUbK/ $("<img/>").attr('src', img_src) $("<div/>").css('background', background) $("

Explain clones info in Github's Traffic tab

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问题 In a recent question I made, one of the answers pointed to another answer in another question where a way to explore the forks and clones of a public Github repo was shared. I went ahead and did that with my own public repo and came up with this information in the Git clones section under the Traffic tab in the Graphs section: I'm not really sure I understand what this information means. Are there 6 clones of the repo in total with 4 of them made on the 09/08? Did only 3 unique cloners cloned

Error running git“Cannot run program ”git": error=2 [duplicate]

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问题 This question already has answers here : Android Studio Checkout Github Error “CreateProcess=2” (Windows) (9 answers) Closed 4 years ago . I have this error on my Android Studio running with Mac OS 10.8.3, I've installed the github client but is not necesary... Any help? Thanks 回答1: Check the path registered in Settings -> Version Control -> Git , in text box next to " Path to Git Executable ". It should reference a local installation of git. If the path mentioned there doesn't exist, that

How to get html of cloned element

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问题 I have an input element like: <input class="input-m" name="formelement[]" type="text"> I want to clone it and store cloned html to a variable: var txt=jQuery("input[name="+n+"[]]:first").clone().html(); this returns an empty string. How can I get the html content from .clone() ? 回答1: Try this var txt=jQuery("input[name="+n+"[]]:first").clone().wrap("<div />").parent().html(); 回答2: I think you want the outer HTML instead of innerHTML: var text = $('<div>').append(jQuery("input[name="+n+"[]]

What does it mean to clone() an object?

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问题 What is object cloning in vb6 or java? In what situation do we use a clone? What does cloning objects mean? Can any one tell me with example please. 回答1: Cloning is actually copying the object data into a new object. This example doesn't clone the data: Foo p = new Foo(); Foo o = p; If Foo has a member a and you change p.a then o.a also changes because both p and o point to the same object. However, Foo p = new Foo(); Foo o = p.Clone(); In this case if you change p.a then o.a remains the same

Java对象复制

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1.Java对象复制概念 1.1 浅复制（浅克隆）复制的对象的所有变量与含有与原来的对象相同的值，而所有的对其他对象的引用仍然指向原对象。换言之，浅复制仅仅复制所考虑的对象，而不复制它所引用的对象。 1.2 深复制（深度克隆）复制的对象的所有变量都含有与原来的对象相同的值，除去那些引用其他对象的变量。那些引用其他对象的变量将指向复制的新对象，而不是原来的对象。换言之，深复制把要复制的对象所引用的对象都复制了一遍。 2.Java对象的clone()克隆方法 2.1 clone方法 clone方法将对象复制了一份并返回给调用者。一般而言，clone()方法满足对任何的对象x，都有x.clone() != x;也即克隆的对象与原对象不是同一个对象，他们有不同的内存地址对任何的对象x，都有x.clone().getClass() == x.getClass()，也即克隆对象与原对象的类型一致。如果对象x的equals()方法定义恰当，那么x.clone().equal(x)应该成立。 2.2 Java中对象的克隆为了获取对象的一份拷贝，我们可以利用Object的clone()方法在派生类中覆盖基类的clone()方法，并声明为public 在派生类的clone()方法中，调用super.clone()。在派生类中实现Cloneable接口 2.3 示例 2.3.1