Tutorial by Examples: o

So here, I have removed the for loops, and made a timeout by adding a second case to the select that returns after 3 seconds. Because the select just waits until ANY case is true, the second case fires, and then our script ends, and chatter() never even gets a chance to finish. // Use of the select...

Subroutine arguments in Perl are passed by reference, unless they are in the signature. This means that the members of the @_ array inside the sub are just aliases to the actual arguments. In the following example, $text in the main program is left modified after the subroutine call because $_[0] in...

1.7+ Timing out an HTTP request with a context can be accomplished with only the standard library (not the subrepos) in 1.7+: import ( "context" "net/http" "time" ) req, err := http.NewRequest("GET", `https://example.net`, nil) ctx, _ := ...

Use Dojo from CDN Load Dojo through <script> tags in your HTML page pointing to Google CDN. Example: <script src="//ajax.googleapis.com/ajax/libs/dojo/1.11.2/dojo/dojo.js"></script> Install Dojo with Bower Type the following command in your project directory: bowe...

Mage::app()->getStores(); Returns an array of Mage_Core_Model_Store models.

To get started quickly with Express, you can use the Express generator which will create an application skeleton for you. First, install it globally with npm: npm install express-generator -g You may need to put sudo before this command if you get a "permission denied" error. Once th...

Command line You can use cpan to install modules directly from the command line: cpan install DBI This would be followed by possibly many pages of output describing exactly what it is doing to install the module. Depending on the modules being installed, it may pause and ask you questions. Int...

NHibernate uses classes to map into tables or views. Creating a Plain Old CLR Object (POCOs, sometimes called Plain Ordinary CLR Objects) is a good practice for persistent classes. A POCO has its data accessible through the standard .NET property mechanisms, shielding the internal representation fro...

Also known as bogosort. import Data.List (permutations) sorted :: Ord a => [a] -> Bool sorted (x:y:xs) = x <= y && sorted (y:xs) sorted _ = True psort :: Ord a => [a] -> [a] psort = head . filter sorted . permutations Extremely inefficient (on today's compu...

Google currently has two ways to load the JS library for Google Visualization (a.k.a Google Charts), gstatic loader (https://www.gstatic.com/charts/loader.js) and jsapi (https://www.google.com/jsapi). The gstatic loader is recommended because Google is transitioning away from jsapi to the gstati...

Show a "Hello World!" in message box. MsgBox, Hello World! Show "Hello World!" stored in variable MyString in message box. MyString := "Hello World!" MsgBox, %MyString% Show a "Hello World!" in tooltip. #Persistent Tooltip, Hello World! Show a &q...

In the logging configuration file of your choice set the logging of the following packages to the levels shown.: # log the sql statement org.hibernate.SQL=DEBUG # log the parameters org.hibernate.type=TRACE There will probably be some logger specific prefixes that are required. Log4j config:...

This will show you the generated SQL, but will not show you the values contained within the queries. <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> <property name="hibernateProperties"> <p...

If you have any exposure to other text-based template languages, such as Smarty, Django, or Jinja, you should feel right at home with Twig. It's both designer and developer friendly by sticking to PHP's principles and adding functionality useful for templating environments. The key-features are... ...

Categories provide the ability to add some extra functionality to an object without subclassing or changing the actual object. For example we want to set some custom fonts. Let's create a category that add functionality to UIFont class. Open your XCode project, click on File -> New -> File a...

Def: Final Keyword prevents child classes from overriding a method by prefixing the definition with final. If the class itself is being defined final then it cannot be extended Final Method class BaseClass { public function test() { echo "BaseClass::test() called\n"; } ...

The do operator iterates over a block of code until a conditional query equals false. The do-while loop can also be interrupted by a goto, return, break or throw statement. The syntax for the do keyword is: do { code block; } while( condition ); Example: int i = 0; do { Console.W...

The [ and [[ operators are primitive functions that are generic. This means that any object in R (specifically isTRUE(is.object(x)) --i.e. has an explicit "class" attribute) can have its own specified behaviour when subsetted; i.e. has its own methods for [ and/or [[. For example, this is...

This operator checks whether the object is of a particular class/interface type. instanceof operator is written as: ( Object reference variable ) instanceof (class/interface type) Example: public class Test { public static void main(String args[]){ String name = "Buyya";...

The left hand operand for these operators must be a either a non-final variable or an element of an array. The right hand operand must be assignment compatible with the left hand operand. This means that either the types must be the same, or the right operand type must be convertible to the left o...