Tutorial by Examples: le

Enable Flat Catalogs

The model Magento uses to store customer and product data results in longer than average SQL queries and more reads. Enabling the Flat Catalog option for Categories and Products will merge product data into one table, therefore improving performance. Login to your administration area and go to – Sy...

magento • Optimizing Magento For Speed

Enable System Cache

Login to your administration area and go to – System > Cache Management Next, click on the Select All link Finally, make sure the Actions is set to Enable and click submit Disable Error Logging Login to your administration area and go to – System > Configuration > Developer Under ...

magento • Optimizing Magento For Speed

Please do not use this tag!

This tag is a duplicate of playframework. Please post any content that you would post here in that tag, with the version set to “2.0”

playframework-2.0 • Getting started with playframework-2.0

Basic example

You can configure Mail by just adding/changing these lines in the app's .ENV file with your email provider login details, for example for using it with gmail you can use: MAIL_DRIVER=smtp MAIL_HOST=smtp.gmail.com MAIL_PORT=587 [email protected] MAIL_PASSWORD=yourPassword MAIL_E...

Laravel • Mail

LED - With Button control

You can also use this code to setup an LED with a button switch with a pull up resistor, this could preferably be with the next step after setting up the intial LED controller int buttonState = 0; // variable for reading the pushbutton status void setup() { // initialize the LED pin as an ...

arduino • Getting started with arduino

web-socket Client example

This is an example of a web-socket client in javascript. It: Connects to a live demo server. Sends a message. Receives message(s). Disconnects after an interval. var mySocket = null; var serverUrl = 'wss://echo.websocket.org'; // wss: is ws: but using SSL. var oWebSocket = window...

WebSockets • Getting started with WebSockets

Multiple bound object types

It's also possible to add multiple object types to a Static Dispatch function. fn mammal_speak<T: Person + Dog>(mammal: &T) { println!("{0}", mammal.speak()); } fn main() { let person = Person {}; let dog = Dog {}; mammal_speak(&person); mammal...

Rust • Traits

Basic Example of Html 5 cache

this is our index.html file <!DOCTYPE html> <html manifest="index.appcache"> <body> <p>Content</p> </body> </html> then we will create index.appcache file with below codes CACHE MANIFEST index.html write those files that you want ...

HTML • HTML 5 Cache

Sample illustration using ASP.Net Web Forms

GridView definition on ASPX page As shown below, first column of grid is defined as a checkbox column, which is conditionally cleared as shown in further examples below (the header checkbox is only for selecting/un-selecting all rows on current page, but same can be extended for all on grid easily)...

devexpress • Implementing conditional selection of Grid rows in DevExpress GridView

Default values of uninitialized variables

Although not necessary in PHP however it is a very good practice to initialize variables. Uninitialized variables have a default value of their type depending on the context in which they are used: Unset AND unreferenced var_dump($unset_var); // outputs NULL Boolean echo($unset_bool ? "tr...

PHP • Variables

Sample Job

class UserUnsubscribeJob < ApplicationJob queue_as :default def perform(user) # this will happen later user.unsubscribe end end

Ruby on Rails • Active Jobs

Using a predefined ruleset as default

tslint can extend an existing rule set and is shipped with the defaults tslint:recommended and tslint:latest. tslint:recommended is a stable, somewhat opinionated set of rules which we encourage for general TypeScript programming. This configuration follows semver, so it will not have breaking ch...

TypeScript • TSLint - assuring code quality and consistency

simpleCLI and Jython examples

simpleCLI go to simpleCLI, enter the following code java weka.classifiers.rules.ZeroR -t path/to/a-file-of-dataset Jython Example codes from Advanced Weka MOOC course lesson 5.1 # imports import weka.core.converters.ConverterUtils.DataSource as DS import weka.filters.Filter as Filter impor...

weka • Simple Comparison of Weka Interfaces

Simple Pointers

func swap(x, y *int) { *x, *y = *y, *x } func main() { x := int(1) y := int(2) // variable addresses swap(&x, &y) fmt.Println(x, y) }

Go • Pointers

Cross-validate Classifier Error Bubble

# Note: install jfreechartOffscreenRenderer package as well for JFreeChart library # imports import weka.classifiers.Evaluation as Evaluation import weka.classifiers.functions.LinearRegression as LinearRegression import weka.core.converters.ConverterUtils.DataSource as DS import java.util.Ran...

weka • Getting Started With Jython in Weka

Controlled Components

A controlled component is bound to a value and its changes get handled in code using event based callbacks. class CustomForm extends React.Component { constructor() { super(); this.state = { person: { firstName: '', lastName: '' } } } ...

React • React Forms

Unordered list example

Angular 2 • How to use ngfor

More complext template example

<div *ngFor="let item of items"> <p>{{item.name}}</p> <p>{{item.price}}</p> <p>{{item.description}}</p> </div>

Angular 2 • How to use ngfor

Tracking current interaction example

<div *ngFor="let item of items; let i = index"> <p>Item number: {{i}}</p> </div> In this case, i will take the value of index, which is the current loop iteration.

Angular 2 • How to use ngfor

Opening and reading large XML files using iterparse (incremental parsing)

Sometimes we don't want to load the entire XML file in order to get the information we need. In these instances, being able to incrementally load the relevant sections and then delete them when we are finished is useful. With the iterparse function you can edit the element tree that is stored while ...

Python Language • Manipulating XML