Tutorial by Examples: in

GCobol >>SOURCE FORMAT IS FIXED *> *************************************************************** *> Purpose: Demonstrate a merge pass *> Tectonics: cobc -x gnucobol-merge-sample.cob *> *************************************************************** ...

extern crate regex; use regex::Regex; fn main() { let rg = Regex::new(r"(\d+)").unwrap(); // Regex::replace replaces first match // from it's first argument with the second argument // => Some string with numbers (not really) rg.replace("Some string ...

If you want to perform a user input validation of your textfield use the following code snippet: // MARK: - UITextFieldDelegate let allowedCharacters = CharacterSet(charactersIn:"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvxyz").inverted func textField(_ textField:...

First, Install gulp and gulp-htmlmin to project directory locally npm install --save-dev gulp gulp-htmlmin Then add the minify-html task to your gulpfile.js var gulp = require('gulp'); var htmlmin = require('gulp-htmlmin'); // Task to minify HTML gulp.task('minify-html', function() { retu...

Using the NotificationCenter of iOS, which can be very powerful, you are able to intercept certain app-wide events: NotificationCenter.default.addObserver( self, selector: #selector(ViewController.do(_:)), name: NSNotification.Name.UIApplicationDidBecomeActive, o...

Before reading this example, it is required to have a brief idea on edge-relaxation. You can learn it from here Bellman-Ford Algorithm is computes the shortest paths from a single source vertex to all of the other vertices in a weighted digraph. Even though it is slower than Dijkstra's Algorithm, i...

First, Install gulp and del to project directory locally npm install --save-dev gulp del Then add the clean task to your gulpfile.js var gulp = require('gulp'); var del = require('del'); gulp.task('default', function() { }); // Task to delete target build folder gulp.task('clean', func...

In case of problems, enable the internal logger <nlog internalLogFile="c:\log.txt" internalLogLevel="Trace"> <targets> <!-- target configuration here --> </targets> <rules> <!-- log routing rules --> </rules&gt...

In case of problems, enable the internal logger. C# example: // set internal log level InternalLogger.LogLevel = LogLevel.Trace; // enable one of the targets: file, console, logwriter: // enable internal logging to a file (absolute or relative path. Don't use layout renderers) InternalL...

First, install the morgan Middleware in your project npm install --save morgan

Add the following code to your app.js file: var express = require('express') var morgan = require('morgan') var app = express() app.use(morgan('combined')) app.get('/', function (req, res) { res.send('hello, world!') }) Now when you access your website you will see in the console y...

First, install fs and path in your project npm install --save fs path Add the following code to your app.js file: var express = require('express') var fs = require('fs') var morgan = require('morgan') var path = require('path') var app = express() // create a write stream (in append mo...

First, install fs, file-stream-rotator and path in your project npm install --save fs file-stream-rotator path Add the following code to your app.js file: var FileStreamRotator = require('file-stream-rotator') var express = require('express') var fs = require('fs') var morgan = require('morg...

Write all events with level: debug, info, warn, error and fatal to one file: <?xml version="1.0" ?> <nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <targets> &lt...

To understand this example, it is recommended to have a brief idea about Bellman-Ford algorithm which can be found here Using Bellman-Ford algorithm, we can detect if there is a negative cycle in our graph. We know that, to find out the shortest path, we need to relax all the edges of the graph (V-...

This would be a basic setup in wich we will send all the log messages to the console and to a log file. Let's start with the libraries. Will use maven for that: <dependency> <groupId>org.apache.logging.log4j</groupId> <artifactId>log4j-api</artifact...

Here is an example of a basic page using the Materialize CSS framework which incorporates the grid system and materialboxed. <!DOCTYPE html> <html> <head> <title>Materializecss Example webpage</title> <!--Import Google Icon Font--> <link href="ht...

Adjacency list is a collection of unordered lists used to represent a finite graph. Each list describes the set of neighbors of a vertex in a graph. It takes less memory to store graphs. Let's see a graph, and its adjacency matrix: Now we create a list using these values. This is called adjacen...

>>> from sympy.solvers.inequalities import solve_univariate_inequality >>> from sympy import var >>> x=var('x') >>> solve_univariate_inequality(2*x**2-6>1,x,relational=False) (-oo, -sqrt(14)/2) U (sqrt(14)/2, oo) The relational=False parameter simply ind...

// 1.0, Revealing Module pattern var myNamespace = myNamespace || {}; myNamespace.example = (function () { /** * User Event 1.0 example detailing usage of the Submit events * * @appliedtorecord employee */ var exports = {}; function beforeSubmit(type)...