Tutorial by Examples: ch

The following configuration can be used as a base config for bundling up your project as a library. Notice how the module config contains a list of preLoaders and loaders. // webpack.config.js var path = require('path'); module.exports = { entry: path.join(__dirname, '..', 'src/index.js...

public override void ViewDidLoad() { base.ViewDidLoad(); // Perform any additional setup after loading the view, typically from a nib. //Declare the search bar and add it to the header of the table searchBar = new UISearchBar(); searchBar.SizeToFit(); ...

For multiple databases, you have the database.php file where you can set as many databases as you need. If you want to "switch" a database for a specific model on the fly, use the setDataSource() method. For example, if you have two databases, you can define them in the database.php file...

Select * from firm's_address; Select * from "firm's_address";

Say you have a table named table or you want to create a table with name which is also a keyword, You have to include the name table in pair of double quotes "table" Select * from table; Above query will fail with syntax error, where as below query will run fine. Select * from "tab...

Sometimes it's really useful to know the type of child component when iterating through them. In order to iterate through the children components you can use React Children.map util function: React.Children.map(this.props.children, (child) => { if (child.type === MyComponentType) { ......

Assuming you know the productID: First import StoreKit Then in your code let productID: Set = ["premium"] let request = SKProductsRequest(productIdentifiers: productID) request.delegate = self request.start() and in the SKProductsRequestDelegate: func productsRequest(request: ...

Monkey patching's main issue is that it pollutes the global scope. Your code working is at the mercy of all the modules you use not stepping on each others toes. The Ruby solution to this is refinements, which are basically monkey patches in a limited scope. module Patches refine Fixnum do ...

That the easiest case actually, very natural in the React world and the chances are - you are already using it. You can pass props down to child components. In this example message is the prop that we pass down to the child component, the name message is chosen arbitrarily, you can name it anything...

With this line we will install all the necessary packages in one step, and the last update: pacman -Syu apache php php-apache mariadb HTTP Edit /etc/httpd/conf/httpd.conf Change ServerAdmin [email protected] as you need. The folder of the WEB Pages by default is ServerRoot "/etc/httpd&q...

var mongoose = require('mongoose'); //assume Player and Board schemas are already made var Player = mongoose.model('Player'); var Board = mongoose.model('Board'); //Each key in the schema is associated with schema type (ie. String, Number, Date, etc) var gameSchema = new mongoose.Schema({ ...

Now that you have an authorization code, you can make a POST to the token endpoint (https://api.twitch.tv/kraken/oauth2/token) to get an OAuth token. You will receive a JSON-encoded access token, refresh token, and a list of the scopes approved by the user. You can now use that token to make authent...

This line of code demonstrate how to check if a specific field is NULL or has blank value =IIF(IsNothing(Fields!UserEmail.Value) OR Fields!UserEmail.Value = "", "Empty", "Not Empty") This line of code checks if the field is NULL IsNothing(Fields!UserEmail.Value) ...

It's quite common to want to check the status of the various partitions/drives on your server/computer to see how full they are. The following command is the one you'll want to run: df -h This will produce output similar to the following: [root@mail ~]# df -h Filesystem Size Used A...

using System; using Xamarin.Forms; namespace contact_picker { public class ChooseContactPage : ContentPage { public ChooseContactPage () { } } }

using Android.App; using Android.OS; using Android.Content; using Android.Database; using Xamarin.Forms; namespace contact_picker.Droid { [Activity (Label = "ChooseContactActivity")] public class ChooseContactActivity : Activity { public string type_num...

using UIKit; using AddressBookUI; using Xamarin.Forms; using Xamarin.Forms.Platform.iOS; using contact_picker; using contact_picker.iOS; [assembly: ExportRenderer (typeof(ChooseContactPage), typeof(ChooseContactRenderer))] namespace contact_picker.iOS { public partial class Choose...

Sending data back to the parent, to do this we simply pass a function as a prop from the parent component to the child component, and the child component calls that function. In this example, we will change the Parent state by passing a function to the Child component and invoking that function ins...

You can quickly determine if a text includes a specific pattern using Regex. There are multiple ways to work with Regex in PowerShell. #Sample text $text = @" This is (a) sample text, this is a (sample text) "@ #Sample pattern: Content wrapped in () $pattern = '\(.*?\)' Using ...

Sometimes you need to replace a value matching a pattern with a new value that's based on that specific match, making it impossible to predict the new value. For these types of scenarios, a MatchEvaluator can be very useful. In PowerShell, a MatchEvaluator is as simple as a scriptblock with a singl...