Tutorial by Examples: id

Given a non-empty cv::Mat img of some size, we can fill it to a solid color in several ways: img = cv::Scalar(blueVal,greenVal,redVal); or, the more general, mask supporting, cv::Mat::setTo(): img.setTo(cv::Scalar(blueVal,greenVal,redVal)); If you are using the older OpenCV C API with IplIma...

Using Android Studio 2.2 and higher Native Development Kit (NDK) you can use to compile C and C++ code. You can use NDK by manually downloading NDK and build it or through CMake . Here I will give process flow for manually install NDK and an example code, Based on your System OS you can download ...

How to implement Firebase Real-Time database in Android applications. Setup/Installation: First, install the Firebase SDK (guide) Register your project using the Firebase console After successfuly completing the two steps above, add the following dependency in your application level ...

When you call store.dispatch(actionObject) it is handled synchronously. I.e. reducers would be called and your store listeners would be notified, your react views would be re-rendered on each dispatched action. Middleware is what enables you to delay dispatching or even dispatch different actions ...

This example introduces the VideoCapture class, where we use it to take an image from a webcam and save it to an image. import org.opencv.core.Mat; import org.opencv.core.MatOfRect; import org.opencv.core.Point; import org.opencv.core.Rect; import org.opencv.core.Scalar; import org.opencv.imgc...

What are themes? There are several visual appearance out there for Bootstrap, which can be found from sources, such as Bootswatch, which are modifying the bootstrap.min.css file. You can also create your own theme this way. When to modify themes and when to add new rules to a site.css file? When ...

You need to decide what your forest structure is going to look like before you install Active Directory for the first time. Are you to have just one domain in your forest, or are you going to have multiple domains in your forest? Active Directory can support multiple sites. Generally sites are spl...

<ul class="nav nav-tabs nav-justified"> <li role="presentation" class="active"><a href="#">Home</a></li> <li role="presentation"><a href="#">Profile</a></li> <li role="p...

jQuery('body').bind('click', function(e) { if(jQuery(e.target).closest('#navbar').length == 0) { // click happened outside of .navbar, so hide var opened = jQuery('.navbar-collapse').hasClass('collapse in'); if ( opened === true ) { jQuery('#navbar2 .navb...

In ExtJS, you can override nearly any method of the framework and replace it with your own. This allows you to modify existing classes without directly modifying the ExtJS source code. Sometimes, you may want to enhance an existing class or provide a sane default property on a class. For example, ...

Encryption is used to transform data in its orignal format (Eg: The contents of a letter, Credentials part of authorizing a financial transaction) to something that cannot be easily reconstructed by anyone who is not intended to be part of the conversation. Basically encryption is used to preve...

Asynchronous validators allows you to validate form information against your backend (using $http). These kind of validators are needed when you need to access server stored information you can't have on your client for various reasons, such as the users table and other database information. To us...

This is example has extracted from this boilerplate. Custom middleware: export default function clientMiddleware() { return ({dispatch, getState}) => { return next => action => { if (typeof action === 'function') { return action(dispatch, getState); } ...

Enable validation using annotations in app/config/config.yml file framework: validation: { enable_annotations: true } Create an Entity in AppBundle/Entity directory. The validations are made with @Assert annotations. <?php # AppBundle/Entity/Car.php namespace AppBundle\Ent...

Create an Entity in AppBundle/Entity directory. You can do this manually, or by using Symfony's command php bin/console doctrine:generate:entity and filling in the required information in each step. You must specify yml option at Configuration format (yml, xml, php or annotation) step. <?php...

This example shows how to retrieve an ID of a newly created item using SharePoint REST API. Note : listName - This variable contains name of you list. newItemBody - This will be your request body for adding new item in list. e.g. var newItemBody = { __metadata: { 'type': 'SP.Data.MyListNameIte...

A quick read of most developer sites will reveal that WinForms is considered inferior to WPF. One of the most often cited reasons is the supposed difficulty in making application wide changes to the "look-and-feel" of an entire application. In fact it is surprisingly easy to produce an a...

How to implement FirebaseRealTime database in android application. Following is the steps for do it. First install firebase sdk, If you dont know how to install then following is the URL for help. Install Firebase SDK After thet register your project in firbase console, URL of the firbas...

<Grid> <Grid.RowDefinitions> <RowDefinition/> <RowDefinition/> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition/> <ColumnDefinition/> </Grid.ColumnDefinitions> <Text...

By using the Grid.RowSpan and Grid.ColumnSpan attached properties, children of a Grid can span multiple rows or columns. In the following example the second TextBlock will span the second and third column of the Grid. <Grid> <Grid.ColumnDefinitions> <ColumnDefinition/&...