clone

How to clone() a element n times?

由 我的未来我决定 提交于 2019-11-30 03:48:21
问题 I have a dynamic table that I want to attach <col> elements with jQuery. I have this: var tds = jQuery("tr > td").length; // count how many tds jQuery("#colgroup-compare > col").clone() // clone .appendTo('#colgroup-compare'); // and append Obviously this only appends 1 <col> , I want to append (n) numbers. How would I do this? I have the length, I have the clone ability, now how do I combine it? 回答1: With a loop : var $col = $("#colgroup-compare > col"); for(var i = 0; i < n; i++){ $col

Linux - understanding the mount namespace & clone CLONE_NEWNS flag

由 青春壹個敷衍的年華 提交于 2019-11-30 03:30:46
I am reading the mount & clone man page. I want to clarify how CLONE_NEWNS effects the view of file system for the child process. (File hierarchy) Lets consider this tree to be the directory hierarchy. Lets says 5 & 6 are mount points in the parent process. I clarified mount points in another question . So my understanding is : 5 & 6 are mount points means that the mount command was used previously to 'mount' file systems (directory hierarchies) at 5 & 6 (which means there must be directory trees under 5 & 6 as well). From mount man page : A mount namespace is the set of filesystem mounts that

Why are objects automatically passed by reference?

由 左心房为你撑大大i 提交于 2019-11-30 03:15:09
问题 I have a general question about deep- and shallow-copy in the context of the pass-by-reference- and pass-by-value-concept of C#: In C# it is a requirement to explicitly create methods that accept pointers/references to be able to pass such to the method. However, at least objects passed as parameters to methods/constructors are behaving differently from the rest. It seems they are always passed by reference if no extra cloning is done as described here: http://zetcode.com/lang/csharp/oopii/.

Deep copy of arrays in Ruby

由 …衆ロ難τιáo~ 提交于 2019-11-30 01:59:30
问题 I wanted to get an object on production and do an exact replica( copy over its contents) to another object of same type. I tried doing this in 3 ways from ruby console which none of them worked: Let's say you have the tt as the first object you want to copy over and tt2 as the replica object. The first approach I tried is cloning the array tt2.patients = tt.urls.patients tt2.doctors = tt.segments.doctors tt2.hospitals = tt.pixels.hospitals Second approach I tried is duplicating the array

jQuery: clone elements AND events

由 时间秒杀一切 提交于 2019-11-30 00:53:17
问题 Whenever I use ajax to dynamically create new content, .clone(), append() etc, the new element looses any triggers and events I programmed =( After making copy, simple things that WORK on other elements like adding a class to , on the copied elements no longer work. Any new ajax content does not work. Command buttons no longer work. What can I do? I am cloning this HTML, and the command buttons no longer work. Styling the span elements no longer work on the CLONED elements: <div name="shows"

clone() has protected access - made public Object clone()

由 不问归期 提交于 2019-11-30 00:44:57
问题 I'm writing code to create an object, clone the object, then compare the two. The object in question, Octagon, is an extension of an object GeometricObject public class Octagon extends GeometricObject implements Comparable<Octagon>, Cloneable { private double side; public Octagon (double side){ this.side = side; } public Object clone() throws CloneNotSupportedException { Octagon octClone = (Octagon)super.clone(); return octClone; } In a file named Octagon.java In another, TestOctagon.java, is

How can I “deeply” clone the properties of closed source 3rd party classes?

由 醉酒当歌 提交于 2019-11-30 00:01:43
问题 The ICloneable interface of the .NET framework usually provides a way to support cloning of an instance of a class. But if I have multiple 3rd party classes , and don't want to care about each of the properties individually, how can I clone objects of those classes efficiently? (The source code of those classes is not available). Is there a way using generics and extension methods? What I need is a deep clone which creates an exact copy including all the properties and (child) objects.

SQLAlchemy: Modification of detached object

由 让人想犯罪 __ 提交于 2019-11-29 22:24:35
I want to duplicate a model instance (row) in SQLAlchemy using the orm. My first thought was to do this: i = session.query(Model) session.expunge(i) old_id = i.id i.id = None session.add(i) session.flush() print i.id #New ID However, apparently the detached object still "remembers" what id it had, even though I set the id to None while it was detached. Thus, session.flush() tries to execute an UPDATE changing the primary key to null. Is this expected behavior? How can I remove the 'memory' of this attribute, and just treat the detached object as a new object upon re-adding it to the session?

Mercurial clone from a branch

由 纵饮孤独 提交于 2019-11-29 22:05:20
We have a repository with three named branches, I wanted to clone one of the branches. Is there a mercurial command to do that? If I provide the path (of branch) with hg clone I get 404 error. hg clone http://your/repo -r branchname should do the trick. Benjamin's right. But is that really what you want to do? In particular, you'll only get the changesets needed to make up that branch, and nothing else - and that would, for example, prevent you from pulling changesets in from the trunk or other branches. You might well be better off just cloning the entire repository and then simply working in

Clone Entire JavaScript ScriptEngine

由 前提是你 提交于 2019-11-29 20:14:28
问题 I need to somehow deep clone the entire set of bindings of my ScriptEngine object. What I have tried I have tried so far the Cloner library to clone the entire Bindings structure. This would be great if it worked because it would have ensured a precise copy, including private variables. But this leads to jvm heap corruption (the jvm just crashes with exit code -1073740940). Sometimes it doesn't crash but weird things happen, like the System.out.println() stops working as it should... I have
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