Tutorial by Examples: if

Dev and Prod environment using different datasources

After succesfully setup Spring-Boot application all the configuration is handled in an application.properties file. You will find the file at src/main/resources/. Normally there is a need to have a database behind the application. For development its good to have a setup of dev and a prod environme...

spring-boot • Create and Use of multiple application.properties files

Installing Plugins for Responsive images|Css Minification|Js minification

Our goal , is to Make your Images conform to widths and scale appropriately, by generating a battery of images of varied widths, and to minify them Lint your Javascript Minimize your assets - JS/CSS/HTML , thus enabling you to host a lighter than lightest code Watch the css/js/image files for ...

gulp • Comprehensive Guide to a Front-end Workflow Automation with Gulpjs -1 of 2

Asset Optimization and Minification

So, Before writing out optimiser functions , we need to install a couple of caching plugins. bash $ npm install --save-dev gulp-cached bash $ npm install --save-dev gulp-remember You might wonder why two caches eh!. gulp-cached , passes only modified or new content down the pipeline to other ...

gulp • Comprehensive Guide to a Front-end Workflow Automation with Gulpjs -1 of 2

Using AntiForgeryToken with Jquery Ajax Request

First off you create the form @using (Html.BeginForm()) { @Html.AntiForgeryToken() } Action Method [HttpPost] [ValidateAntiForgeryToken] public ActionResult Test(FormViewModel formData) { // ... } Script <script src="https://code.jquery.com/jquery-1.12.4.min.js"&g...

asp.net-mvc • Html.AntiForgeryToken

Use github repo for specific gem in Gemfile

Instead of gem 'rails' You can specify a github user/repo combination with gem 'rails', github: 'rails/rails'

rubygems • Change gem source in Gemfile

Using Browserify with Vanilla Javascript

First install gulp and browserify via npm i gulp gulp-browserify. This will install browserify into your node_modules folder. gulpfile.js var gulp = require('gulp'); var browserify = require('gulp-browserify'); gulp.task('script', function() { gulp.src('./src/script.js') .pipe(br...

gulp • Using Browserify

Using Browserify with Coffeescript

First install gulp and browserify via npm i gulp gulp-coffeeify. This will install browserify into your node_modules folder. gulpfile.js var gulp = require('gulp'); var coffeeify = require('gulp-coffeeify'); gulp.task('script', function() { gulp.src('./src/script.coffee') .pipe(c...

gulp • Using Browserify

Example of Access Modifiers

In the following example consider you have a solution hosting two projects: ConsoleApplication1 and SampleClassLibrary. The first project will have the classes SampleClass1 and SampleClass2. The second one will have SampleClass3 and SampleClass4. In other words we have two assemblies with two classe...

Visual Basic .NET Language • Declaring variables

UserNotifications

You will have to import UserNotifications @import UserNotifications; 2.Request authorization for localNotification let center = UNUserNotificationCenter.current() center.requestAuthorization([.alert, .sound]) { (granted, error) in // Enable or disable features based on authorizat...

Xamarin.iOS • Best practices for migrating from UILocalNotification to User Notifications framework

Lifecycle method call in different states

This example serves as a complement to other examples which talk about how to use the lifecycle methods and when the method will be called. This example summarize Which methods (componentWillMount, componentWillReceiveProps, etc) will be called and in which sequence will be different for a componen...

React • React Component Lifecycle

Minification in Angular

What is Minification ? It is the process of removing all unnecessary characters from source code without changing its functionality. Normal Syntax If we use normal angular syntax for writing a controller then after minifiying our files it going to break our functionality. Controller (Before mini...

AngularJS • Getting started with AngularJS

Different ways to Select from DropDown list

Below is and HTML page <html> <head> <title>Select Example by Index value</title> </head> <body> <select name="Travel"><option value="0" selected> Please select</option> <option value="1">Car</option&...

selenium-webdriver • Select Class

Modifying Model.url()

Model.url and Collection.url are only used internally by the default Backbone.sync method. The default method assumes you are tying into a RESTful API. If you are using a different endpoint design, you will want to override the sync method and may want utilize the url method. var Model = Backbone.M...

backbone.js • url and urlRoot

Difference between Tk and Toplevel

Tk is the absolute root of the application, it is the first widget that needs to be instantiated and the GUI will shut down when it is destroyed. Toplevel is a window in the application, closing the window will destroy all children widgets placed on that window{1} but will not shut down the program...

tkinter • Multiple windows (TopLevel widgets)

arranging the window stack (the .lift method)

The most basic case to lift a particular window above the others, just call the .lift() method on that window (either Toplevel or Tk) import tkinter as tk #import Tkinter as tk #change to commented for python2 root = tk.Tk() for i in range(4): #make a window with a label window = tk...

tkinter • Multiple windows (TopLevel widgets)

Saving data as CSV style ASCII file

Analog to np.loadtxt, np.savetxt can be used to save data in an ASCII file import numpy as np x = np.random.random([100,100]) np.savetxt("filename.txt", x) To control formatting: np.savetxt("filename.txt", x, delimiter=", " , newline="\n", comment...

numpy • File IO with numpy

Make device receive notification even when sleeping

When sending a notification to an iOS device, you must set priority: "high" for it to wake up. Otherwise, the notification will not be received while the phone is asleep. Sets the priority of the message. Valid values are "normal" and "high." On iOS, these correspond...

google-cloud-messaging • Differences between sending to Android and iOS devices

Select nodes based on specific child node

Sample XML <Students> <Student> <Name> <First>Ashley</First> <Last>Smith</Last> </Name> <Grades> <Exam1>A</Exam1> <Exam2>B</Exam2> ...

xpath • Select nodes based on their children

Deliver HTML at specified path

Here's how to create an Express server and serve index.html by default (empty path /), and page1.html for /page1 path. Folder structure project root | server.js |____views | index.html | page1.html server.js var express = require('express'); var path = require('path')...

Node.js • Deliver HTML or any other sort of file

Using Cascade Classifiers to detect face

Python Code import numpy as np import cv2 #loading haarcascade classifiers for face and eye #You can find these cascade classifiers here #https://github.com/opencv/opencv/tree/master/data/haarcascades #or where you download opencv inside data/haarcascades face_cascade = cv2.CascadeClassi...

opencv • Cascade Classifiers