Tutorial by Examples: r

You need to add a reference of the file called offline-exporting.js to make the client side exporting available. Please be noted this feature is not supported in browser IE 8, So if you load this chart in any unsupported browser, the module will fall back to the export server. This can be handled wi...

Import the namespace System.Runtime.Caching(Make sure that you have added System.Runtime.Caching DLL to your project reference). Create an instance of MemoryCache class. MemoryCache memCache = MemoryCache.Default; Add values to MemoryCache public IQueryable<tblTag> GettblTags() ...

Install the package: $ pip install pymssql import pymssql SERVER = "servername" USER = "username" PASSWORD = "password" DATABASE = "dbname" connection = pymssql.connect(server=SERVER, user=USER, password=PASSWORD, database=DATABASE...

Let's start with a simple algorithm to see how recursion could be implemented in Ruby. A bakery has products to sell. Products are in packs. It services orders in packs only. Packaging starts from the largest pack size and then the remaining quantities are filled by next pack sizes available. For ...

.prefer_dml 1 turn on dmlformat output .prefer_dml 0 turn off dmlformat output

Email clients use different rendering engines to render HTML emails: Apple Mail, Outlook for Mac, Android Mail and iOS Mail use WebKit Outlook 2000/02/03 use Internet Explorer 6 Outlook 2007/10/13 use Microsoft Word Web clients use their browser’s respective engine (e.g. Safari uses WebKit, Ch...

You can watch data property of any Vue instance. When watching a property, you trigger a method on change: export default { data () { return { watched: 'Hello World' } }, watch: { 'watched' () { console.log('The watched property ha...

XmlView: <mvc:View controllerName="sap.ui.demo.wt.controller.App" xmlns="sap.m" xmlns:mvc="sap.ui.core.mvc" displayBlock="true"> <App> <pages> <Page content="{path:'Tiles>/Tiles',fact...

DATA table-name; INFILE "file-path/file-name.csv" dsd; INPUT Name $ City $ Age; RUN;

InvocationExpression class allows invocation of other lambda expressions that are parts of the same Expression tree. You create them with static Expression.Invoke method. Problem We want to get on the items which have "car" in their description. We need to check it for null before searc...

The viewport meta tag tells a device to set the viewable area to the width of the device screen. It also sets the initial scale to normal (not zoomed in or out). <meta name="viewport" content="width=device-width"> or <meta name="viewport" content="wid...

Most Rx operators take an optional scheduler on which to schedule their future iterations. If not supplied they will use their default configured scheduler. Supplying a scheduler can be useful for testing purposes in which we like to talk about virtual time instead of real time for speed of test exe...

YAML supports three styles of escape notation: Entity Escapes a. space: " " b. colon: ":" c. ampersand: "&" Unicode Escapes a. space: "\u0020" b. single quote: "\u0027" c. double quote: "\u0022" ...

Use this to reset the table to the condition at which it was created. This deletes all rows and resets values such as auto-increment. It also doesn't log each individual row deletion. TRUNCATE TABLE Employees

Create a folder where you would like to have your game live, and move into that mkdir my-new-game cd my-new-game Initialize the directory using npm. npm init -y Install phaser as a node package. npm install phaser Install http-server as a global module, to be used on the...

With the Tap Gesture, you can make any UI-Element clickable (Images, Buttons, StackLayouts, ...): (1) In code, using the event: var tapGestureRecognizer = new TapGestureRecognizer(); tapGestureRecognizer.Tapped += (s, e) => { // handle the tap }; image.GestureRecognizers.Add(tapGestureR...

We have a set of jobs J={a,b,c,d,e,f,g}. Let j in J be a job than its start at sj and ends at fj. Two jobs are compatible if they don't overlap. A picture as example: The goal is to find the maximum subset of mutually compatible jobs. There are several greedy approaches for this problem: Earli...

Open a raster that covers the globe and extract a subset of the raster. import gdal # Path to a tiff file covering the globe # http://visibleearth.nasa.gov/view.php?id=57752 tif_name = "/path_name/land_shallow_topo_21600.tif" # Open raster in read only mode ds = gdal.Open(tif_n...

Matrix chain multiplication is an optimization problem that can be solved using dynamic programming. Given a sequence of matrices, the goal is to find the most efficient way to multiply these matrices. The problem is not actually to perform the multiplications, but merely to decide the sequence of t...