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Haskell supports a notion of class extension. For example, the class Ord inherits all of the operations in Eq, but in addition has a compare function that returns an Ordering between values. Ord may also contain the common order comparison operators, as well as a min method and a max method. The =&...

From ES5.1 onwards, you can use the native method Array.prototype.filter to loop through an array and leave only entries that pass a given callback function. In the following example, our callback checks if the given value occurs in the array. If it does, it is a duplicate and will not be copied to...

var arr = [1, 2, 3, 4]; Method 1 Creates a new array and overwrites the existing array reference with a new one. arr = []; Care must be taken as this does not remove any items from the original array. The array may have been closed over when passed to a function. The array will remain in mem...

C++11 In the header file: // widget.h #include <memory> // std::unique_ptr #include <experimental/propagate_const> class Widget { public: Widget(); ~Widget(); void DoSomething(); private: // the pImpl idiom is named after the typ...

This query will return all COLUMNS and their associated TABLES for a given column name. It is designed to show you what tables (unknown) contain a specified column (known) SELECT c.name AS ColName, t.name AS TableName FROM sys.columns c JOIN sys.tables t ON c.object_id = t.o...

$this->helper('checkout/url')->getCheckoutUrl(); OR Mage::helper('checkout/url')->getCheckoutUrl();

$this->helper('customer/data')->getLoginUrl(); OR Mage::helper('customer/data')->getLoginUrl();

$this->helper('customer/data')->getLogoutUrl(); OR Mage::helper('customer/data')->getLogoutUrl();

$this->helper('customer/data')->getForgotPasswordUrl(); OR Mage::helper('customer/data')->getForgotPasswordUrl();

$this->helper('customer/data')->getAccountUrl(); OR Mage::helper('customer/data')->getAccountUrl();

The easiest way to get started with Gremlin is to install the Gremlin Console. The Gremlin Console is a REPL that allows immediate feedback on the results of Gremlin traversals. As a prerequisite, Java 8 is required for the Gremlin Console to run. Ensure that it is installed prior to moving forward...

Detailed instructions on getting titan set up or installed.

You can redirect the debug output to a text file by adding a TextWriterTraceListener to the Debug.Listeners collection. public static void Main(string[] args) { TextWriterTraceListener myWriter = new TextWriterTraceListener(@"debug.txt"); Debug.Listeners.Add(myWriter); Deb...

At its simplest, proc.time() gives the total elapsed CPU time in seconds for the current process. Executing it in the console gives the following type of output: proc.time() # user system elapsed # 284.507 120.397 515029.305 This is particularly useful for benchmarking s...

One package for line profiling is lineprof which is written and maintained by Hadley Wickham. Here is a quick demonstration of how it works with auto.arima in the forecast package: library(lineprof) library(forecast) l <- lineprof(auto.arima(AirPassengers)) shine(l) This will provide you...

First choose your auth strategy and add it to your Gemfile. You can find a list of strategies here: https://github.com/intridea/omniauth/wiki/List-of-Strategies gem 'omniauth-github', :github => 'intridea/omniauth-github' gem 'omniauth-openid', :github => 'intridea/omniauth-openid' You ca...

return : http://www.example.com/

return : http://www.example.com/my-product.html

If you want to use your own templates (be it HTML, XML, JSON or any other format) for a TYPO3 extension using fluid templating, you can add additional template paths. An extensions template/partial/layout paths are usually set in TypoScript setup under the properties plugin.tx_<extensionkey>...

Mage::helper('customer')->getCustomer(); or Mage::getSingleton('customer/session')->getCustomer();