Tutorial by Examples: l

Console Module Similar to the browser environment of JavaScript node.js provides a console module which provides simple logging and debugging possibilities. The most important methods provided by the console module are console.log, console.error and console.time. But there are several others like ...

Open phone's settings open battery open menu and select "battery optimization" from the dropdown menu select "all apps" select the app you want to whitelist select "don't optimize" Now this app will show under not optimized apps. An app can check whether it's...

Annotations are means of attaching metadata to code. To declare an annotation, put the annotation modifier in front of a class: annotation class Strippable Annotations can have meta-anotations: @Target(AnnotationTarget.CLASS, AnnotationTarget.FUNCTION, AnnotationTarget.VALUE_PARAMETER, A...

// get existing collections $orders = Mage::getModel('sales/order')->getCollection(); $products = Mage::getModel('catalog/product')->getCollection(); $customers = Mage::getModel('customer/customer')->getCollection();

// $orders is collection $orders->addAttributeToSelect('status'); // get status attribute $orders->addAttributeToSelect('*'); // get all attributes

// filter by creation date $date = new Zend_Date(); $toDate = $date->get(Zend_Date::W3C); // today $fromDate = $date->sub('1', Zend_Date::MONTH)->get(Zend_Date::W3C); // one month ago $orders->addAttributeToFilter('created_at', array('from' => $fromDate, 'to' => $toDate)); ...

To get the raw value of a field on the Context Item: Sitecore.Context.Item["Field Name"]; To get the raw value of a field on a given item, item: item["Field Name"];

To make the table more readable, following are the ways to color it: Rows Columns Lines Cells Coloring Rows Use \rowcolor (provided by colortbl; also loaded by xcolor under the [table] package option). Example: \documentclass{article} \usepackage[table]{xcolor} \begin{document} \be...

Break regular string literals with the \ character let a = "foobar"; let b = "foo\ bar"; // `a` and `b` are equal. assert_eq!(a,b); Break raw-string literals to separate strings, and join them with the concat! macro let c = r"foo\bar"; let d = conca...

Elixir / Phoenix Install Homebrew first: /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" Then running brew install elixir will install both Elixir and it's dependency - Erlang. Install mix with mix local.hex. Install Phoenix as per ...

Writing and executing a simple TestNG program is mainly 3 step process. Code - write business logic of your test and annotate it with TestNG annotations Configure - add information of your test in testng.xml or in build.xml Run TestNG - it can be invoked from command line, ANT, IDE like Eclipse...

Let's say you've got a table of loans, and another related table of parcels, where each loan can have one or more parcels associated with it. If you want a query to show each loan and a list of all its associated parcels, but you only want each loan to show up once, then you could use something lik...

The following picture illustrates how component communication should work. The picture comes from The Progressive Framework slides of Evan You (Developer of VueJS). Here is an example of how it works : DEMO HTML <script type="x-template" id="message-box"> <inp...

You might have realized that $emit is scoped to the component that is emitting the event. That's a problem when you want to communicate between components far from one another in the component tree. Note: In Vue1 you coud use $dispatch or $broadcast, but not in Vue2. The reason being that it doesn'...

This code places the hint text at form load and manipulates it as follows: C# private void Form_load(object sender, EventArgs e) { textBox.Text = "Place Holder text..."; } private void textBox_Enter(object sender, EventArgs e) { if(textBox.Text == "Place Holder text....

<?php // hook into the init action and call create_book_taxonomies when it fires add_action( 'init', 'create_book_taxonomies', 0 ); // create taxonomy genres for the post type "book" function create_book_taxonomies() { // Add new taxonomy, make it hierarchical (like categorie...

Given: --- variable_name: True Then, these tasks with always run. - name: This is a conditional task module: src=/example/ dest=/example when: variable_name - name: This is a conditional task module: src=/example/ dest=/example when: True This task will never run. - name: T...

Real life use cases for Singleton pattern; If you are developing a client-server application, you need single instrance of ConnectionManager, which manages the life cycle of client connections. The basic APIs in ConnectionManager : registerConnection: Add new connection to existing list of connec...

You can install the whole bundle by downloading the dmg package from here. The bundle contains a CoqIDE that can be used for writing your proofs or you can use coqtop command to run the interpreter on your terminal Installation of Coq on MacOS is easy using homebrew as well brew install coq or i...

In most cases, the range_lookup is used as FALSE (an exact match). The default for this parameter is TRUE - it is less commonly used in this form, but this example shows one usecase. A supermarket gives a bonus based on the customers monthly spend. If the customer spends 250 EUR or more in a mon...