clone

问题 Please note: I am not looking for git sparse checkout, nor is this question a duplicate of Is there any way to clone a git repository's sub-directory only? In git, is it possible to clone or checkout just a subdirectory, into the current directory? In svn, you would do this by extending the URL. For example, instead of checking out http://server/repo you would checkout http://server/repo/subdir The difference between sparse checkout and checking out only a subdir, is that a sparse checkout

问题 All I want is just to create an exact copy of an object. I have a class [Serializable] public class Project { public int Id { get; set; } public String Name { get; set; } //navigational fields.. public virtual List<BusinessRequirement> BusinessRequirements { get; set; } } and another [Serializable] public class BusinessRequirement { public int Id { get; set; } public String Name { get; set; } public String Description { get; set; } public virtual List<Project> Projects { get; set; } } so

问题 As the definite guide aptly points out (search for "Tags and cloning"): When you run hg clone -r foo to clone a repository as of tag foo , the new clone will not contain any revision newer than the one the tag refers to, including the revision where the tag was created. The result is that you'll get exactly the right subset of the project's history in the new repository, but not the tag you might have expected. It means hg tags in your new clone does NOT show the foo tag. Same thing happens

问题 What is the best way to create a clone of a DTO? There is not an ICloneable interface or a BinaryFormatter class in Silverlight. Is reflection the only way? 回答1: Here is the code we came up with for cloning. This works in Silverlight 2 & 3. Public Shared Function Clone(Of T)(ByVal source As T) As T Dim serializer As New DataContractSerializer(GetType(T)) Using ms As New MemoryStream serializer.WriteObject(ms, source) ms.Seek(0, SeekOrigin.Begin) Return DirectCast(serializer.ReadObject(ms), T)

问题 I am trying to clone some github repos locally with hggit. I am following tutorial instructions to do $ hg clone git://github.com/schacon/hg-git.git abort: repository git://github.com/schacon/hg-git.git not found! $ hg clone git+ssh://git@github.com/schacon/hg-git.git abort: repository git+ssh://git@github.com/schacon/hg-git.git not found! I know I have hggit because the following works $ python -c "import hggit" $ head -n1 `which hg` #!/opt/local/Library/Frameworks/Python.framework/Versions

问题 I have an issue trying to apply jQuery AutoComplete to multiple rows in a table when using jQuery clone. The AutoComplete works on the first row but fails to work when additional rows are added to the table. So far, I have the following: HTML Table: <table class="table" cellspacing="0" id="myTable"> <tr> <th width="40%">Item</th> <th width="60%">Description</th> </tr> <tr> <td>input name="product_title" id="product_title" type="text"><td> <td><textarea name="product_description" id="product

问题 Can anyone let me know if using cloneElement (on exist element instance) or createElement (on react Element class) which one is better in term of performance? Sometimes cloning something is faster than create new instance. Please let me know. Thanks 回答1: Using cloneElement will be usually be faster because you only need to instantiate one initial component. This jsperf test shows cloneElement to be nearly twice as fast as createElement for Chromium 45 on Linux: cloneElement ~1.7m ops/second

问题 In this bug report, Doug Lea writes (referring to a pre-release version of JDK 5.0): While CopyOnWriteArraySet is declared Cloneable , it fails to define public clone method. But it eventually ends up that CopyOnWriteArraySet doesn't implement the Cloneable interface at all! (This is true in Java SE 6, 7, and 8.) How is CopyOnWriteArraySet different from CopyOnWriteArrayList with respect to cloning? There is a sound reason nobody ever wants to clone it? P.S. I understand that clone() is not

问题 I was reading this article and it says that Object 's clone method is very tricky. It's based on field copies, and it's "extra-linguistic." It creates an object without calling a constructor". All I see in the grep code is the following line : protected native Object clone() throws CloneNotSupportedException; What am I missing here ? 回答1: You're missing the native which means it's implemented in non-Java code (in this case it's implemented in the JVM itself). That's because the exact

问题 We know that the dateformat classes are not thread safe. I have a multi-threaded scenario where dateformats needs to be used. I can't really create a new instance in new thread as SimpledateFormat creation seems to be expensive(the constructor ends up calling "compile" which is costly). After some tests the only two options left for me are: External Synchronization - I really dont want to do this Cloning in each thread - Don't know whether there are some catches? Any suggestions? If guys have