Tutorial by Examples: n

Create a new Xamarin Forms app using PCL File -> New Solution -> Multiplatform App -> Xamarin Forms -> Forms App; Name the project as EffectsDemo Under the iOS project, add a new Effect class that inherits from PlatformEffect class and overrides the methods OnAttached, OnDetached and ...

There may be multiple reason why you want to create a text file in batch. But whatever the reason may be, this is how you do it. If you want to overwrite an existing text file use >. Example: @echo off echo info to save > text.txt But if you want to append text to an already existing t...

Detailed instructions on getting mongodb-query set up or installed.

You may want to copy files from one place to another. In this example we'll teach you. You can use the command xcopy. The syntax is xcopy c:\From C:\To Example: @echo off xcopy C:\Folder\text.txt C:\User\Username\Desktop There are also switches you can use. If you want to view them open up co...

Event Type- DDL_COMMAND_START DDL_COMMAND_END SQL_DROP This is example for creating an Event Trigger and logging DDL_COMMAND_START events. CREATE TABLE TAB_EVENT_LOGS( DATE_TIME TIMESTAMP, EVENT_NAME TEXT, REMARKS TEXT ); CREATE OR REPLACE FUNCTION FN_LOG_EVENT() RETURNS EVE...

var="hello" function foo(){ local var="sup?" echo "inside function, var=$var" } foo echo "outside function, var=$var" Will output inside function, var=sup? outside function, var=hello

Calculating the power of a given number can be done recursively as well. Given a base number n and exponent e, we need to make sure to split the problem in chunks by decreasing the exponent e. Theoretical Example: 2² = 2x2 2³ = 2x2x2 or, 2³ = 2² x 2In there lies the secret of our recursive al...

This example shows a very basic example of how to utilize onCommand. I don't suggest processing your commands directly in onCommand, but this does the trick for this simple case. In this example we attempt to set the player's gamemode. The first thing we need to do is make sure that the sender isn...

Most examples show instantiating and holding a LazySingleton object until the owning application has terminated, even if that object is no longer needed by the application. A solution to this is to implement IDisposable and set the object instance to null as follows: public class LazySingleton : ID...

systemd is the de facto init system in most Linux distributions. After Node has been configured to run with systemd, it's possible to use the service command to manage it. First of all, it needs a config file, let's create it. For Debian based distros, it will be in /etc/systemd/system/node.service...

ghcjs can be invoked with the same command line arguments as ghc. The generated programs can be run directly from the shell with Node.js and SpiderMonkey jsshell. for example: $ ghcjs -o helloWorld helloWorld.hs $ node helloWorld.jsexe/all.js Hello world!

For the sake of readability, which will be useful for beginners when reading VB code as well for full time developers to maintain the code, we can use "Region" to set a region of the same set of events, functions, or variables: #Region "Events" Protected Sub txtPrice_TextCh...

$model = Mage::getModel('catalog/product')->getCollection() Filter based on store: $mode->addStoreFilter($storeId) Filter based on product type: $mode->addAttributeToFilter('type_id', 'configurable') $mode->addAttributeToFilter('type_id', 'simple') Filter based on status: $m...

Mage::getModel('catalog/product_media_config')->getMediaUrl($product->getThumbnail()); //Thumbnail Mage::getModel('catalog/product_media_config')->getMediaUrl($product->getSmallImage()); //Small Image Mage::getModel('catalog/product_media_config')->getMediaUrl($product->getImage(...

$rootId = Mage::app()->getStore($storeId)->getRootCategoryId(); $categories = Mage::getModel('catalog/category')->getCollection() ->addAttributeToSelect('*') ->addFieldToFilter('path', array('like'=> "1/$rootId/%")) ->addAttributeToFilter('level', 2...

{-# LANGUAGE RecordWildCards #-} import Text.XML.Light data Package = Package { pOrderNo :: String , pOrderPos :: String , pBarcode :: String , pNumber :: String } -- | Create XML from a Package instance Node Package where node qn Package {..} = node qn [ un...

A static data member of the class may be fully defined within the class definition if it is declared inline. For example, the following class may be defined in a header. Prior to C++17, it would have been necessary to provide a .cpp file to contain the definition of Foo::num_instances so that it wou...

$isSecure = Mage::app()->getStore()->isCurrentlySecure(); This will return true if the current url is secure.

$store = Mage::app()->getStore(); $storeId = Mage::app()->getStore()->getStoreId(); $storeCode = Mage::app()->getStore()->getCode(); $websiteId = Mage::app()->getStore()->getWebsiteId(); $storeGroupId = Mage::app()->getStore()->getGroupId(); $storeName = Mage::app()-&...

The extern storage class specifier can modify a declaration in one of the three following ways, depending on context: It can be used to declare a variable without defining it. Typically, this is used in a header file for a variable that will be defined in a separate implementation file. // glo...