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We can use ~ as a shorthand in some everyday scenarios. We know that ~ converts -1 to 0, so we can use it with indexOf on array. indexOf let items = ['foo', 'bar', 'baz']; let el = 'a'; if (items.indexOf('a') !== -1) {} or if (items.indexOf('a') >= 0) {} can be re-written as if (...

Detailed instructions on getting jenkins-pipeline set up or installed.

A simple OGL 4.0 GLSL shader program that shows the use shader subroutines. The program is executed with a phyton script. To run the script, PyOpenGL and NumPy must be installed. The subroutines switch between different geometry generated in the geometry shader and change the surface representatio...

add_action('rest_api_init', 'my_rest_validate_endpoint' ); function my_rest_validate_endpoint() { // Declare our namespace $namespace = 'myrest/v1'; // Register the route // Example URL matching this route: // http://yourdomain/wp-json/myrest/v1/guides/tag=europe/price=...

From the GitHub repo of RxJava, RxJava is a Java VM implementation of Reactive Extensions: a library for composing asynchronous and event-based programs by using observable sequences. It extends the observer pattern to support sequences of data/events and adds operators that allow you to compose seq...

STUFF(Original_Expression, Start, Length, Replacement_expression) STUFF() function inserts Replacement_expression, at the start position specified, along with removing the characters specified using Length parameter. Select FirstName, LastName,Email, STUFF(Email, 2, 3, '*****') as StuffedEmail Fr...

Create a New Project on Google Developer Console To integrate Android application with Google Drive, create the credentials of project in the Google Developers Console. So, we need to create a project on Google Developer console. To create a project on Google Developer Console, follow these steps:...

We will add a file on Google Drive. We will use the createFile() method of a Drive object to create file programmatically on Google Drive. In this example we are adding a new text file in the user’s root folder. When a file is added, we need to specify the initial set of metadata, file contents, and...

Tastypie can be installed with python package management, ie, pip or we can directly checkout the code from Github pip install django-tastypie Checkout from Github

Up to now we tried get request. (If you need to try other HTTP resquest, use some API testing tools like curl or postman) If you try sending a POST/PUT/DELETE to the resource, you find yourself getting “401 Unauthorized” errors. For safety, Tastypie ships with the authorization class set to ReadOnl...

This is an example of a basic GUI with two buttons that change a value stored in the GUI's handles structure. function gui_passing_data() % A basic GUI with two buttons to show a simple use of the 'handles' % structure in GUI building % Create a new figure. f = figure(); ...

SQL Server 2012 Returns the item at the specified index from a list of values. If index exceeds the bounds of values then NULL is returned. Parameters: index: integer, index to item in values. 1-based. values: any type, comma separated list SELECT CHOOSE (1, 'apples', 'pears', 'oranges', 'b...

Replace firebase values with your app api values: import firebase from 'firebase'; componentWillMount() { firebase.initializeApp({ apiKey: "yourAPIKey", authDomain: "authDomainNAme", databaseURL: "yourDomainBaseURL", projectId: "yourProjectID", ...

When performing data science tasks, it’s common to want to use data found on the internet. You’ll usually be able to access this data via an Application Programming Interface(API) or in other formats. However, there are times when the data you want can only be accessed as part of a web page. In case...

While using scrollviews in storyboard it's better to calculate content size according to number of views present in scrollview rather than giving content size programatically with static value. Here are the steps to get content size dynamically. Step 1 : Add Scrollview to view in storyboard and ...

A simple OGL 4.0 GLSL shader program that shows that shows how to add details with tessellation shader to the geometry. The program is executed with a python script. To run the script, PyOpenGL and NumPy must be installed. The basic mesh in this example is an icosahedron that consists of 20 triang...

For better performance it's important to avoid using of array (lambda) function in JSX. As explained at https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-no-bind.md : A bind call or arrow function in a JSX prop will create a brand new function on every single render. Th...

It's highly recommended to use ESLint in your project on react-native. ESLint is a tool for code validation using specific rules provided by community. For react-native you can use rulesets for javascript, react and react-native. Common ESLint rules with motivation and explanations for javascript ...

The Xamarin Forms Entry control does not have a MaxLength property. To achieve this you can extend Entry as below, by adding a Bindable MaxLength property. Then you just need to subscribe to the TextChanged event on Entry and validate the length of the Text when this is called: class CustomEntry ...