Tutorial by Examples: nf

Then go into the mongo shell and initiate the replica set, like so: mongo > rs.initiate() PRIMARY> rs.add("mongo-a") PRIMARY> rs.add("mongo-b") PRIMARY> rs.add("mongo-c") PRIMARY> rs.setReadPref('secondaryPreferred')

The replica set will need an oplog user to access the database. mongo PRIMARY> use admin PRIMARY> db.addUser({user:"oplogger",pwd:"YOUR_PASSWORD",roles:[],otherDBRoles:{local:["read"]}}); PRIMARY> show users

Importing into a default Meteor instance is fairly easy. Note that you can add a --jsonArray option if your json file is exported as an array from another system. mongoimport --db meteor --port 3001 --collection foo --file foo.json

db.posts.find().forEach(function(doc){ db.posts.update({_id: doc._id}, {$set:{'version':'v1.0'}}, false, true); });

This example illustrates how to configure Jersey so that you can begin using it as a JAX-RS implementation framework for your RESTful API. Assuming that you have already installed Apache Maven, follow these steps to set up Jersey: Create maven web project structure, in terminal (windows) execute...

While there are many different control sequences for io:format and io_lib:format, most of the time you'll use only three different ones: ~s, ~p and ~w. ~s The ~s is for strings. It prints strings, binaries and atoms. (Anything else will cause a badarg error.) It doesn't quote or escape anything...

The current frame rate (in FPS, Frames Per Second) and total number of SKNodes in the scene (nodeCount, each sprite is an SKNode but other objects in the scene are also SKNodes) can be shown in the bottom right hand corner of the view. These can be useful when turned on (set to true) for debugging ...

Config a remote for my fork $ cd my_local_repo $ git remote add upstream https://github.com/ORIGINAL_OWNER/ORIGINAL_REPOSITORY.git # Specify a new remote upstream repository that will be synced with the fork $ git remote -v # Verify the new upstream repository specified for my f...

Open a terminal and run: sudo dnf install arduino Open the Arduino application, or type arduino into the terminal

:set foldmethod={method} sets the fold method for the current window. This determines how folds are manipulated within that window. Valid options for "method" are: manual (folds are manually created and destroyed by the user) indent (folds are created for lines of equal indentation) m...

Preparation $ mkdir globbing $ cd globbing $ mkdir -p folder/{sub,another}folder/content/deepfolder/ touch macy stacy tracy "file with space" folder/{sub,another}folder/content/deepfolder/file .hiddenfile $ shopt -u nullglob $ shopt -u failglob $ shopt -u dotglob $ shopt -u nocaseg...

You first need to run a Stanford CoreNLP server: java -mx4g -cp "*" edu.stanford.nlp.pipeline.StanfordCoreNLPServer -port 9000 -timeout 50000 Here is a code snippet showing how to pass data to the Stanford CoreNLP server, using the pycorenlp Python package. from pycorenlp import Stanf...

class MyAdmin extends ModelAdmin { ... function getEditForm($id = null, $fields = null) { $form = parent::getEditForm($id, $fields); if ($this->modelClass == 'MyDataObjectName') { $form->Fields() ->fieldByName($this->sanitis...

public class LoginActivity extends BaseAppCompatActivity { @BindView(R.id.tIETLoginEmail) EditText mEditEmail; @BindView(R.id.tIETLoginPassword) EditText mEditPassword; @Override protected void onResume() { super.onResume(); FirebaseUser firebaseUs...

Java configuration is typically done by applying the @Configuration annotation to a class to suggest that a class contains bean definitions. The bean definitions are specified by applying the @Bean annotation to a method that returns an object. @Configuration // This annotation tells the Applicati...

Xml configuration is typically done by defining beans within an xml file, using Spring's specific beans schema. Under the root beans element, typical bean definition would be done using the bean subelement. <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="htt...

To detect the endian of the device var isLittleEndian = true; (()=>{ var buf = new ArrayBuffer(4); var buf8 = new Uint8ClampedArray(buf); var data = new Uint32Array(buf); data[0] = 0x0F000000; if(buf8[0] === 0x0f){ isLittleEndian = false; } })(); Lit...

1. Setup your formatter and routing in Register of (App_Start/WebApiConfig) public static class WebApiConfig { public static void Register(HttpConfiguration config) { GlobalConfiguration.Configuration.Formatters.Clear(); GlobalConfiguration.Configuration.Formatters.Add...

Example of calling an extension method as an extension and as a regular method. public Class MyClass Sub Main() 'Extension called directly on the object. Dim Version = Assembly.GetExecutingAssembly.GetVersionFromAssembly() 'Called as a regular method. ...

You can check for syntax errors and referenced files in an NGINX configuration file before running it with: nginx -t Alternatively you can run service script service nginx configtest While both of these commands will tell you if your new nginx configuration is ok [without killing your curren...