I have an array X of 10 elements. I would like to create a new array containing all the elements from X that begin at index 3 and ends in index 7. Sure I can easily write a loop that will do it for me but I would like to keep my code as clean … Read more
I want to understand the difference between a branch, a fork and a clone in Git? Similarly, what does it mean when I do a git fetch as opposed to a git pull? Also, what does rebase mean in comparison to merge? How can I squash individual commits themselves together? How are they used, why … Read more
This question already has answers here: Deep cloning objects (55 answers) Closed 8 years ago. I want a true deep copy. In Java, this was easy, but how do you do it in C#? 10 s 10
I have a generic list of objects in C#, and wish to clone the list. The items within the list are cloneable, but there doesn’t seem to be an option to do list.Clone(). Is there an easy way around this? 28 s 28 If your elements are value types, then you can just do: List<YourType> … Read more
Consider the code below: DummyBean dum = new DummyBean(); dum.setDummy(“foo”); System.out.println(dum.getDummy()); // prints ‘foo’ DummyBean dumtwo = dum; System.out.println(dumtwo.getDummy()); // prints ‘foo’ dum.setDummy(“bar”); System.out.println(dumtwo.getDummy()); // prints ‘bar’ but it should print ‘foo’ So, I want to copy the dum to dumtwo and change dum without affecting the dumtwo. But the code above is not doing … Read more
I have a cloned project from a master branch from remote repository remote_repo. I create a new branch and I commit to that branch. Other programmers pushed to remote_repo to the master branch. I now need to rebase my local branch RB onto remote_repo‘s master branch. How to do this? What commands to type to … Read more
I want to do something like: MyObject myObj = GetMyObj(); // Create and fill a new object MyObject newObj = myObj.Clone(); And then make changes to the new object that are not reflected in the original object. I don’t often need this functionality, so when it’s been necessary, I’ve resorted to creating a new object … Read more
I have an object x. I’d like to copy it as object y, such that changes to y do not modify x. I realized that copying objects derived from built-in JavaScript objects will result in extra, unwanted properties. This isn’t a problem, since I’m copying one of my own literal-constructed objects. How do I correctly … Read more
This question’s answers are a community effort. Edit existing answers to improve this post. It is not currently accepting new answers or interactions. What is the most efficient way to clone a JavaScript object? I’ve seen obj = eval(uneval(o)); being used, but that’s non-standard and only supported by Firefox. I’ve done things like obj = … Read more
A safe way is to serialize the object, then deserialize. This ensures everything is a brand new reference. Here’s an article about how to do this efficiently. Caveats: It’s possible for classes to override serialization such that new instances are not created, e.g. for singletons. Also this of course doesn’t work if your classes aren’t Serializable.
