Tutorial by Examples: r

During a merge, you can pass --ours or --theirs to git checkout to take all changes for a file from one side or the other of a merge. $ git checkout --ours -- file1.txt # Use our version of file1, delete all their changes $ git checkout --theirs -- file2.txt # Use their version of file2, delete ...

$ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 2bc9b1988080 redis "docker-entrypoint.sh" 2 weeks ago Up 2 hours 0.0.0.0:6379->6379/tcp eleph...

Docker commands which take the name of a container accept three different forms: TypeExampleFull UUID9cc69f11a0f76073e87f25cb6eaf0e079fbfbd1bc47c063bcd25ed3722a8cc4aShort UUID9cc69f11a0f7Nameberserk_wozniak Use docker ps to view these values for the containers on your system. The UUID is generat...

To stop a running container: docker stop <container> [<container>...] This will send the main process in the container a SIGTERM, followed by a SIGKILL if it doesn't stop within the grace period. The name of each container is printed as it stops. To start a container which is stoppe...

Ordinarily, images are pulled automatically from Docker Hub. Docker will attempt to pull any image from Docker Hub that doesn't already exist on the Docker host. For example, using docker run ubuntu when the ubuntu image is not already on the Docker host will cause Docker to initiate a pull of the l...

Docker commands which take the name of an image accept four different forms: TypeExampleShort ID693bce725149Namehello-world (defaults to :latest tag)Name+taghello-world:latestDigesthello-world@sha256:e52be8ffeeb1f374f440893189cd32f44cb166650e7ab185fa7735b7dc48d619 Note: You can only refer to an im...

Once you've paused execution on a breakpoint, you may want to follow execution line-by-line to observe what happens. Open your browser's Developer Tools and look for the Execution Control icons. (This example uses the icons in Google Chrome, but they'll be similar in other browsers.) Resume: Unpau...

A ViewPager allows to show multiple fragments in an activity that can be navigated by either fliping left or right. A ViewPager needs to be feed of either Views or Fragments by using a PagerAdapter. There are however two more specific implementations that you will find most useful in case of using ...

A TabLayout can be used for easier navigation. You can set the tabs for each fragment in your adapter by using TabLayout.newTab() method but there is another more convenient and easier method for this task which is TabLayout.setupWithViewPager(). This method will sync by creating and removing tabs...

While inside a Razor code block, the browser will only recognize HTML code if the code is escaped. Use @: for a Single line: @foreach(int number in Model.Numbers) { @:<h1>Hello, I am a header!</h1> } Use <text> ... </text> for Multi-line: @{ var number = 1; ...

First create an express app: const express = require('express'); const app = express(); Then you can define routes like this: app.get('/someUri', function (req, res, next) {}) That structure works for all HTTP methods, and expects a path as the first argument, and a handler for that path, w...

After installation process, the following lines should be entered in mongo shell (client terminal). > db.world.insert({ "speech" : "Hello World!" }); > cur = db.world.find();x=cur.next();print(x["speech"]); Hello World! Explanation: In the first line,...

SQL TermsMongoDB TermsDatabaseDatabaseTableCollectionEntity / RowDocumentColumnKey / FieldTable JoinEmbedded DocumentsPrimary KeyPrimary Key (Default key _id provided by mongodb itself)

WiredTiger supports LSM trees to store indexes. LSM trees are faster for write operations when you need to write huge workloads of random inserts. In WiredTiger, there is no in-place updates. If you need to update an element of a document, a new document will be inserted while the old document will...

All data is stored in-memory (RAM) for faster read/access.

A key-value engine created to integrate with Facebook's RocksDB.

This uses the Dropbox .NET SDK to download a file from the Dropbox API at the remote path to the local file "Test", while tracking progress: var response = await client.Files.DownloadAsync(path); ulong fileSize = response.Response.Size; const int bufferSize = 1024 * 1024; var buffer ...

jQuery.ajax({ url: 'https://api.dropboxapi.com/2/users/get_current_account', type: 'POST', headers: { "Authorization": "Bearer <ACCESS_TOKEN>" }, success: function (data) { console.log(data); }, error: function (error) { ...

To create a UIImageView programmatically, all you need to do is create an instance of UIImageView: //Swift let imageView = UIImageView() //Objective-C UIImageView *imageView = [[UIImageView alloc] init]; You can set the size and position of the UIImageView with a CGRect: //Swift imageView...

We use Notification.requestPermission to ask the user if he/she wants to receive notifications from our website. Notification.requestPermission(function() { if (Notification.permission === 'granted') { // user approved. // use of new Notification(...) syntax will now be succe...