Use INSERT … SELECT: insert into your_table (c1, c2, …) select c1, c2, … from your_table where id = 1 where c1, c2, … are all the columns except id. If you want to explicitly insert with an id of 2 then include that in your INSERT column list and your SELECT: insert into your_table … Read more
To get a fully independent copy of an object you can use the copy.deepcopy() function. For more details about shallow and deep copying please refer to the other answers to this question and the nice explanation in this answer to a related question.
SQL Server Management Studio’s “Import Data” task (right-click on the DB name, then tasks) will do most of this for you. Run it from the database you want to copy the data into. If the tables don’t exist it will create them for you, but you’ll probably have to recreate any indexes and such. If … Read more
You could try this: List<Int32> copy = new List<Int32>(original); or if you’re using C# 3 and .NET 3.5, with Linq, you can do this: List<Int32> copy = original.ToList(); I see that this answer is still getting upvotes. Well, here’s a secret for ya: the above answer is still using a foreach. Please don’t upvote this … Read more
You can try using System.arraycopy() int[] src = new int[]{1,2,3,4,5}; int[] dest = new int[5]; System.arraycopy( src, 0, dest, 0, src.length ); But, probably better to use clone() in most cases: int[] src = … int[] dest = src.clone();
I would avoid the use of a mega api like apache commons. This is a simplistic operation and its built into the JDK in the new NIO package. It was kind of already linked to in a previous answer, but the key method in the NIO api are the new functions “transferTo” and “transferFrom”. http://java.sun.com/javase/6/docs/api/java/nio/channels/FileChannel.html#transferTo(long,%20long,%20java.nio.channels.WritableByteChannel) … Read more
Remove star from COPY, with this Dockerfile: FROM ubuntu COPY files/ /files/ RUN ls -la /files/* Structure is there: $ docker build . Sending build context to Docker daemon 5.632 kB Sending build context to Docker daemon Step 0 : FROM ubuntu —> d0955f21bf24 Step 1 : COPY files/ /files/ —> 5cc4ae8708a6 Removing intermediate container … Read more
By “shallow copying” it means the content of the dictionary is not copied by value, but just creating a new reference. >>> a = {1: [1,2,3]} >>> b = a.copy() >>> a, b ({1: [1, 2, 3]}, {1: [1, 2, 3]}) >>> a[1].append(4) >>> a, b ({1: [1, 2, 3, 4]}, {1: [1, 2, 3, … Read more
Much easier private static void CopyFilesRecursively(string sourcePath, string targetPath) { //Now Create all of the directories foreach (string dirPath in Directory.GetDirectories(sourcePath, “*”, SearchOption.AllDirectories)) { Directory.CreateDirectory(dirPath.Replace(sourcePath, targetPath)); } //Copy all the files & Replaces any files with the same name foreach (string newPath in Directory.GetFiles(sourcePath, “*.*”,SearchOption.AllDirectories)) { File.Copy(newPath, newPath.Replace(sourcePath, targetPath), true); } }
In PHP, all variables except objects are assigned by the mechanism called copy-on-write, while objects are assigned by reference. Which means that for the arrays with scalar values simply $b = $a already will give you a copy: $a = array(); $b = $a; $b[‘foo’] = 42; var_dump($a); Will yield: array(0) { } Whereas with … Read more