Tutorial by Examples: f

NodeJS run configuration

To set up Node remote debugging, simply run the node process with the --debug flag. You can add a port on which the debugger should run using --debug=<port>. When your node process starts up you should see the message Debugger listening on port <port> Which will tell you that everyt...

IntelliJ/Webstorm Configuration

Make sure that the NodeJS plugin is enabled Select your run configurations (screen) Select + > Node.js Remote Debug Make sure you enter the port selected above as well as the correct host Once those are configured simply run the debug target as you normally would and it will...

Application of `ReplaceAll` and `ReplaceRepeated`

Example of how ReplaceAll only applies a rule at most once, while ReplaceRepeated will do so in a loop but always restart application from the first rule. x + a /. { a_ + z :> (Print[0]; DoneA), a_ + x :> (Print[1]; y + z), a_ + y :> (Print[2]; DoneB)} (* Prints "1&quot...

Here's an example of how to turn radio buttons to button boxes:

import tkinter as tk root = tk.Tk() rbvar = StringVar() rbvar.set(" ") rb1 = tk.Radiobutton(root, text="Option 1", variable=rbvar, value='a', indicatoron=0) rb1.pack() rb2 = tk.Radiobutton(root, text="Option 2", variable=rbvar, value='b', indicatoron=0) rb2...

break out of incomplete expression

When you have entered something into IEx which expects a completion, such as a multiline string, IEx will change the prompt to indicate that it is waiting for you finish by changing the prompt to have an ellipsis (...) rather than iex. If you find that IEx is waiting for you to finish an expression...

Integrate Firebase Real-Time database with an Android application

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 ...

Loading All The Plugins from Package.JSON

Assuming , you have a grasp of how to install gulp, let us dive right down to requiring all the gulp- dependencies from package.json under your projects root folder. In case you do not have a gulpfile yet , please create an empty file with the name gulpfile.js First , we require gulp. like so: v...

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 ...

Anatomy of a gulp function

[Function <name>] (glob) { $.src(glob) .pipe([plugin 1]) .pipe([plugin 2]) . . . .pipe([plugin n]) .pipe( $.dest(<destination-name>) } Note pipe is a method that streams all the files matching the glob input , to our plugins( minifyhtml in this case) . It is simple ...

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 ...

Anatomy of a gulp task

The anatomy of a task definition is like so: $.task(<taskname> , [dependencies] , <body>); dependencies , is an array of tasks that HAVE to finish before the current task you are defining , runs. More like forcing a synchronous execution instead of the default Asynchronous functionalit...

Setting up Browser sync And Configuring Watchers for Style and Script

NOTE This page illustrates use of gulp plugins like browser-sync , gulp-watch and run-sequence , and continues discussing gulp-workflow-automation from where we left off at Gulpjs-workflow-automation-1 of 2. In case you landed here , consider going through that post first. Default Task ...

Defining a Default Task

So now, let us finish the gulpfile code , by defining a Default task. the default task is the one that runs, when you just say gulp on a command prompt under the root of your project. $.task('default', ['generateResponsiveImages'], function() { $.start('watchdog'); console.log('Starting In...

Scan for access points

This example scans for available access points and ad hoc networks. btnScan activates a scan initiated by the WifiManager.startScan() method. After the scan, WifiManager calls the SCAN_RESULTS_AVAILABLE_ACTION intent and the WifiScanReceiver class processes the scan result. The results are displaye...

Sanitize text field

$title = sanitize_text_field( $_POST['title'] );

Sanitize file name

$incfile = sanitize_file_name($_REQUEST["file"]); include($incfile . ".php"); Without sanitizing the file name an attacker could simple pass http://attacker_site/malicous_page as input and execute whatever code in your server.

Filter out multiple combinations of values

Lets say you want to filter a query by two columns, but only certain combinations of those columns. For example, it's OK to have account 60400 with reference JE, but you cannot have account 60400 with reference ED, but you can have account 60500 with reference ED. select * from schema.table where ...

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...

Profiles

The Bluetooth specification contains several profile specifications. A profile describes how to use and implement a function. They can depend on each other, here is a basic layout of the most common profile dependencies All profiles can be found at BT SIG, be aware that different versions might ...

To get value from Binding

ValueExpression ve = AdfmfJavaUtilities.getValueExpression(<binding>, String.class); String <variable_name> = (String) ve.getValue(AdfmfJavaUtilities.getELContext()); Here "binding" indicates the EL expression from which the value is to be get. "variabl...

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