Tutorial by Examples: ed

Although not necessary in PHP however it is a very good practice to initialize variables. Uninitialized variables have a default value of their type depending on the context in which they are used: Unset AND unreferenced var_dump($unset_var); // outputs NULL Boolean echo($unset_bool ? "tr...

This error message may be produced by the OpenSSH ssh client. It means that the TCP connection between the client and the server was closed by the server immediately after being accepted. This message generally indicates the SSH server has been configured not to accept connections from the client fo...

To compare the difference of two dates, we can do the comparison based on the timestamp. var date1 = new Date(); var date2 = new Date(date1.valueOf() + 5000); var dateDiff = date1.valueOf() - date2.valueOf(); var dateDiffInYears = dateDiff/1000/60/60/24/365; //convert milliseconds into years ...

tslint can extend an existing rule set and is shipped with the defaults tslint:recommended and tslint:latest. tslint:recommended is a stable, somewhat opinionated set of rules which we encourage for general TypeScript programming. This configuration follows semver, so it will not have breaking ch...

# imports import weka.classifiers.trees.J48 as J48 import weka.core.converters.ConverterUtils.DataSource as DS import os # load training data data = DS.read(os.environ.get("MOOC_DATA") + os.sep + "anneal_train.arff") data.setClassIndex(data.numAttributes() - 1) # confi...

A controlled component is bound to a value and its changes get handled in code using event based callbacks. class CustomForm extends React.Component { constructor() { super(); this.state = { person: { firstName: '', lastName: '' } } } ...

<ul> <li *ngFor="let item of items">{{item.name}}</li> </ul>

Angular2 provides several exported values that can be aliased to local variables. These are: index first last even odd Except index, the other ones take a Boolean value. As the previous example using index, it can be used any of these exported values: <div *ngFor="let item of item...

add the following function into .bash_profile, save and exit function wekaflstart() { export R_HOME=/Library/Frameworks/R.framework/Resources java -Xss10M -Xmx4096M -cp :weka.jar weka.gui.knowledgeflow.KnowledgeFlow "$1" } inside a directory with a weka.jar file, open its termin...

Camel Case is the practise of writing compound words or phrases where every word begins with Capital letter, without space between word. The function camelize($string) helps to make a string camelized. It converts a string of words separated by spaces or underscores to camel case. echo camelize('Mc...

1. Go to File --> Settings (e.g. Ctrl+Alt+S ). 2. In the left-hand pane, select Plugins. 3. On the Plugins window, click "Install plugin from disk button". 4. Select the desired plugin from your local machine. Click Apply button of the Settings/Preferences dialog. O...

In your class that is under test, you may have some private fields that are not accessible even through constructor. In such cases you can use reflection to set such properties. This is a snippet from such JUnit test. @InjectMocks private GreetingsService greetingsService = new GreetingsService();...

This is a sample HTTP client class based on Event extension. The class allows to schedule a number of HTTP requests, then run them asynchronously. http-client.php <?php class MyHttpClient { /// @var EventBase protected $base; /// @var array Instances of EventHttpConnection protect...

This is a sample HTTP client based on Ev extension. Ev extension implements a simple yet powerful general purpose event loop. It doesn't provide network-specific watchers, but its I/O watcher can be used for asynchronous processing of sockets. The following code shows how HTTP requests can be sche...

The ApplicationData.Current.LocalFolder api allows us to get access to the application cache : var file = await ApplicationData.Current.LocalFolder.CreateFileAsync("myFile.dat", CreationCollisionOption.ReplaceExisting); The FileIO class contains a set of utility methods to easily add d...

PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX owl: <http://www.w3.org/2002/07/owl#> PREFIX schema: <http://schema.org/> PREFIX foaf: <http://xmlns.com/foaf/0.1/> WITH <urn:this:database:doc> INSERT { <#relatedTo> a ...

HTTPS (Hypertext Transfer Protocol Secure) is an encrypted version of HTTP protocol, most often used in connection with services where only the sender and receiver must know the message. It's required if you handle credit card information, and will improve your rank on Google. To enable HTTPS you n...

Once a model is built predict is the main function to test with new data. Our example will use the mtcars built-in dataset to regress miles per gallon against displacement: my_mdl <- lm(mpg ~ disp, data=mtcars) my_mdl Call: lm(formula = mpg ~ disp, data = mtcars) Coefficients: (Intercep...

Create an account Go to https://bitbucket.org/ Click on Get Started on the top right corner Enter your email address, and click continue Enter your full name, password and verification code. Then click Continue An email will be sent to you to verify that you created your account After that...

<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Hello, world!</title> </head> <body> message:"rendered view with ejs" </body> </html>