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When you define a class or module, the implicit receiver becomes a reference to the class itself. For example: puts "I am #{self}" class Example puts "I am #{self}" end Executing the above code will print: "I am main" "I am Example"

BEGIN TRY -- start error handling BEGIN TRANSACTION; -- from here on transactions (modifictions) are not final -- start your statement(s) select 42/0 as ANSWER -- simple SQL Query with an error -- end your statement(s) COMMIT TRANSACTION; -- finalize all transa...

The first thing we need is to tell karma to use Webpack to read our tests, under a configuration we set for the webpack engine. Here, I am using babel because I write my code in ES6, you can change that for other flavors, such as Typescript. Or I use Pug (formerly Jade) templates, you don't have to....

This returns the currently active spreadsheet, or null if there is none. var currentSheet = SpreadsheetApp.getActive(); var url = currentSheet.getUrl(); Logger.log( url );

Getting a reference to the main bundle using Cocoa. To get the main bundle in Cocoa application, call the mainBundle class method of the NSBundle class. NSBundle *mainBundle; // Get the main bundle for the app; mainBundle = [NSBundle mainBundle]; Getting a reference to ...

Locating a Cocoa bundle using its path To obtain the bundle at a specific path using Cocoa, call the bundleWithPath: class method of the NSBundle NSBundle *myBundle; // obtain a reference to a loadable bundle myBundle = [NSBundle bundleWithPath:@"/Library/MyBundle.bundle...

Method 1: proc sql; create table foo like sashelp.class; quit; Method 2: proc sql; create table bar as select * from sashelp.class (obs=0); quit; Method 1 should be the preferred option

just execute uname -a. On Arch: $ uname -a Linux nokia 4.6.4-1-ARCH #1 SMP PREEMPT Mon Jul 11 19:12:32 CEST 2016 x86_64 GNU/Linuxenter code here

val allowedUsers = users.filter { it.age > MINIMUM_AGE }

I.Overview A significant difference between MongoDB & RDBMS is MongoDB has many kinds of operators. One of them is update operator, which is used in update statements. II.What happen if we don't use update operators? Suppose we have a student collection to store student information(Table view...

The Task object is an object like any other if you take away the async-await keywords. Consider this example: public async Task DoStuffAsync() { await WaitAsync(); await WaitDirectlyAsync(); } private async Task WaitAsync() { await Task.Delay(1000); } private Task WaitDire...

@IBAction func axisChange(sender: UISwitch) { UIView.animateWithDuration(1.0) { self.updateConstraintsForAxis() } } The updateConstraintForAxis function just sets the axis of the stack view containing the two image views: private func updateConstraintsForAxis() { if (axi...

If you have predefined ranges and want to use specific colors for those ranges you can declare custom colormap. For example: import matplotlib.pyplot as plt import numpy as np import matplotlib.colors x = np.linspace(-2,2,500) y = np.linspace(-2,2,500) XX, YY = np.meshgrid(x, y) Z = np.sin(...

The first step in you journey in the Play Framework world is to download Activator. Activator is a tool used to create, build and distribute Play Framework applications. Activator can be downloaded from Play downloads section (here I will be using version 1.3.10) After you downloaded the file, ext...

add_filter( 'widget_text', 'shortcode_unautop' ); add_filter( 'widget_text', 'do_shortcode' );enter code here Add this to a plugin or the functions.php file to enable shortcodes in widgets. The code first stops WordPress turning line breaks into paragraph tags and then lets shortcodes to parse f...

Calling the function string InvoiceHtml = myFunction.RenderPartialViewToString("PartialInvoiceCustomer", ToInvoice); // ToInvoice is a model, you can pass parameters if needed Function to generate HTML public static string RenderPartialViewToString(string viewName, object model) { ...

This sample demonstrates how to import the worksheet Azure Excel file blob to DB on the Azure SQL Server and how to export it from DB to Azure Excel blob. Prerequisites: Microsoft Visual Studio 2015 version Open XML SDK 2.5 for Microsoft Office An Azure storage account Azure SQL Server Add...

1)First go through Paypal Developer web site and create an application. 2)Now open your manifest file and give the below permissions <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"...

Phalcon uses db service by default to obtain connection to databases. Assuming you have an conguration file with database field set up, you can include or autoload following code to obtain connection with database for your project: $di->set('db', function () use ($config) { $dbconf = $conf...

Phalcon builds up some information about tables it is using, so it is possible to validate data being inserted to them without implementing everything by hand. Those are meta data for models. To speed up and prevent Phalcon from building Meta Data every time page is refreshed, it is possible to cach...