Tutorial by Examples: od

With any variadic function, the function must know how to interpret the variable arguments list. The “traditional” approach (exemplified by printf) is to specify number of arguments up front. However, this is not always a good idea: /* First argument specifies the number of parameters; the remaind...

Similar to aggregation methods also by the find() method you have the possibility to limit, skip, sort and count the results. Let say we have following collection: db.test.insertMany([ {name:"Any", age:"21", status:"busy"}, {name:"Tony", age:"...

How we can use jenkins in our SalesForce product development. What are the tools plugins are available for Jenkins Integration How to solve CI configuration issue.....etc

The source is available for download from GitHub. Alternatively, you can install using npm: $ npm install --save async As well as using Bower: $ bower install async Example: var async = require("async"); async.parallel([ function(callback) { ... }, function(callback) { .....

Thankfully, libraries like Async.js exist to try and curb the problem. Async adds a thin layer of functions on top of your code, but can greatly reduce the complexity by avoiding callback nesting. Many helper methods exist in Async that can be used in different situations, like series, parallel, wa...

A model (see: Model-View-Controller pattern) in Grails is represented by a so-called Domain Class. Domain classes can define both the persistence and presentation of information in grails. Domain classes can also contain validations. To manage a fleet of cars in your Grails application you could de...

Create a console application. Install EntityFramework nuget package by running Install-Package EntityFramework in "Package Manager Console" Add your connection string in app.config file , It's important to include providerName="System.Data.SqlClient" in your connection. Cre...

Elasticsearch provides data manipulation & data searching capabilities in almost real time. under this example, we have update, delete & batch processing operations. Updating the same document. Suppose we have already indexed a document on /car/external/1 . Then running the command for i...

In order to load data from a MongoDB database into an R dataframe, use the library MongoLite: # Use MongoLite library: #install.packages("mongolite") library(jsonlite) library(mongolite) # Connect to the database and the desired collection as root: db <- mongo(collection = &quo...

As java provide two different commands to compile and run Java code. Same as Kotlin also provide you different commands. javac to compile java files. java to run java files. Same as kotlinc to compile kotlin files kotlin to run kotlin files.

A component’s members and methods can be accessed through the entity from the .components object. Look up the component from the entity’s map of components, and we’ll have access to the component’s internals. Consider this example component: AFRAME.registerComponent('foo', { init: function () { ...

We can load the model by pointing using the ID to an that specifies the src to a file: <a-scene> <a-assets> <!-- At first we load skeletal animation blending JSON as asset --> <a-asset-item id="hand" src="/path/to/hand.json"></a-asset-i...

List of available mixins: ListModelMixin: provides a .list() method to the view/viewset RetrieveModelMixin: provides a .retrieve() method to the view/viewset CreateModelMixin: provides a .create() method to the view/viewset UpdateModelMixin: provides a .update() method to the view/viewset D...

Once you have a stream Format Context and its respective Codec, you can open it for decoding using the following code: // The format context and codec, given - see Find a stream for how to get these AVFormatContext *formatContext; AVCodec* codec; int streamIndex; // Get the codec context AVC...

Given a codec context and encoded packets from a media stream, you can start decoding media into raw frames. To decode a single frame, you can use the following code: // A codec context, and some encoded data packet from a stream/file, given. AVCodecContext *codecContext; // See Open a codec cont...

Prior to iOS 7 when you want to scan a QR code, we might need to rely on third party frameworks or libraries like zBar or zXing. But Apple introduced AVCaptureMetaDataOutput from iOS 7 for reading barcodes. To read QR code using AVFoundation we need to setup/create AVCaptureSession and use captureO...

Here's an example with the technique(hack) invented by the dostips forums' user Liviu: @echo off echo Printed by CMD.EXE cscript //nologo "%~f0?.wsf" //job:JS //job:VBS exit /b %errorlevel% ----END OF BATCH CODE--- <package> <job id="JS"> <script...

This will be a very basic app which will illustrate different ModalpresentationStyle in iOS. According to documentation found here, There are 9 different values for UIModalPresentationStyle which are as follows, fullScreen pageSheet formSheet currentContext custom overFullScreen overCurrent...

Suppose there is a peak of normally (gaussian) distributed data (mean: 3.0, standard deviation: 0.3) in an exponentially decaying background. This distribution can be fitted with curve_fit within a few steps: 1.) Import the required libraries. 2.) Define the fit function that is to be fitted to th...

If you have: class MyExample(val i: Int) { operator fun <R> invoke(block: MyExample.() -> R) = block() fun Int.bigger() = this > i } you can write the following DSL-like code in your production code: fun main2(args: Array<String>) { val ex = MyExample(233) ex ...