Tutorial by Examples: re

When defining a recursively-expanded variable, the contents of the right-hand side are stored as-is. If a variable reference is present, the reference itself is stored (not the value of the variable). Make waits to expand the variable references until the variable is actually used. x = hello y =...

This is such a common requirement in iOS development, and it was always something that had to be done purely in code (or using images - yuck!). Now it's incredibly easy to preview his kind of thing in Interface Builder, there's absolutely no excuse for not using it. Here's the code:- import UIKit ...

This tutorial assumes you already have a working OpenGL environment with all necessary libraries and headers available. #include <GL\glew.h> //Include GLEW for function-pointers etc. #include <GLFW\GLFW3.h> //Include GLFW for windows, context etc. //Impor...

File Structure: pom.xml src/test/java/PlayStoreAutomation.java Launch command: mvn test -Dtest=PlayStoreAutomation PlayStoreAutomation.java import org.junit.AfterClass; import org.junit.BeforeClass; import org.junit.Test; import io.appium.java_client.android.AndroidDriver; import i...

Lets examine the following two examples for reading a file's contents: The first one, which uses an async method for reading a file, and providing a callback function which is called once the file is fully read into the memory: fs.readFile(`${__dirname}/utils.js`, (err, data) => { if (err) {...

Before continuing, make sure you've read the Installation chapter and can access your new Symfony app in the browser. Suppose you want to create a page - /lucky/number - that generates a lucky (well, random) number and prints it. To do that, create a "Controller class" and a "con...

The below example widget demonstrates how to format individual cells of a TreeView column conditionally, depending on value of the field in the particular cell. If value of field is negative, then it'll be displayed in red color and minus symbol will be hidden, otherwise it'll be displayed in normal...

Yield true on the stack if currentpoint executes successfully, or false if it signals a /nocurrentpoint error. {currentpoint pop pop} stopped not % bool

This snippet implements a procedure which behaves like a postscript looping operator. If the user proc calls exit, it catches the invalidexit error to fix the dictstack for the end at the end. Any other error except invalidexit is re-thrown by calling stop. % array n proc . - % Like `forall` but...

The documentation for docker events provides details, but when debugging it may be useful to launch a container and be notified immediately of any related event: docker run... & docker events --filter 'container=$(docker ps -lq)' In docker ps -lq, the l stands for last, and the q for quiet. Th...

The replica set is a group of mongod instances that maintain the same data set. This example shows how to configure a replica set with three instances on the same server. Creating data folders mkdir /srv/mongodb/data/rs0-0 mkdir /srv/mongodb/data/rs0-1 mkdir /srv/mongodb/data/rs0-2 Starting ...

We add three records to our collection test as: > db.test.insert({"key":"value1","key2":"Val2","key3":"val3"}) WriteResult({ "nInserted" : 1 }) > db.test.insert({"key":"value2","key2":"V...

Component definition ko.components.register('progress-bar', { viewModel: function(params) { var that = this; // progress is a numeric value between 0 and 100 that.progress = params.progress; that.progressPercentual = ko.computed...

Usually the case when one wants to change a field type to another, for instance the original collection may have "numerical" or "date" fields saved as strings: { "name": "Alice", "salary": "57871", "dob": "198...

After you got the Location object from FusedAPI, you can easily acquire Address information from that object. private Address getCountryInfo(Location location) { Address address = null; Geocoder geocoder = new Geocoder(getActivity(), Locale.getDefault()); String errorMessage; Li...

Before you decide to work on puppet there are few things that you need to know. puppet work in both client-server architecture (widely used) as well single machine (specially for testing purpose) puppet master can only be configured on a linux machine (master machine/node), windows can b...

Android Studio -> Preferences -> Gradle -> Tick Offline work and then restart your Android studio. Reference screenshot:

// Mixin to generate hidden classes @mixin generate-hidden-classes { @each $bp in map-keys($grid-breakpoints) { .hidden-#{$bp} { @include media-breakpoint-only($bp) { display: none !important; } } } } // Call to the mixin @include generate-hidden-classes(...

Just add this function to your functions.php. It will remove the version from all enqueued js and css files. function remove_cssjs_ver( $src ) { if( strpos( $src, '?ver=' ) ) $src = remove_query_arg( 'ver', $src ); return $src; } add_filter( 'style_loader_src', 'remove_cssjs_ver', 9...

Complete the Installation and setup to connect your app to Firebase. This will create the project in Firebase. Add the dependency for Firebase Realtime Database to your module-level build.gradle file: compile 'com.google.firebase:firebase-database:9.2.1' Configure Firebase Databa...