Tutorial by Examples: p

You can declare functions that serve as type guards using any logic you'd like. They take the form: function functionName(variableName: any): variableName is DesiredType { // body that returns boolean } If the function returns true, TypeScript will narrow the type to DesiredType in any bl...

This error message may be produced by the OpenSSH ssh client. It means that the TCP connection between the client and the server was abnormally closed by the server immediately after being accepted. Common reasons for this message include: The SSH server process is malfunctioning--for example, it...

There is no imshow in the java, you need to write a method for this. This method is a Mat2bufferedImage. Takes mat object as parameter and returns image. public static void main(String[] args) { Mat frame = new Mat(); //0; default video device id VideoCapture camera = new VideoCaptur...

Detailed instructions on getting parse-server set up or installed.

1)In project.json, add below dependencies- "Serilog": "2.2.0", "Serilog.Extensions.Logging": "1.2.0", "Serilog.Sinks.RollingFile": "2.0.0", "Serilog.Sinks.File": "3.0.0" 2)In Startup.cs, add below lines in constru...

The following lines of code is more smart way to setting up the base_url in codeigniter: $config['base_url'] = ((isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == "on") ? "https" : "http"); $config['base_url'] .= "://".$_SERVER['HTTP_HOST']; $config[...

Spotify currently hosts documentation for all its third-party developer tools on its Developer Site.

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...

Detailed instructions on getting seo set up or installed.

simpleCLI go to simpleCLI, enter the following code java weka.classifiers.rules.ZeroR -t path/to/a-file-of-dataset Jython Example codes from Advanced Weka MOOC course lesson 5.1 # imports import weka.core.converters.ConverterUtils.DataSource as DS import weka.filters.Filter as Filter impor...

On Debian-based distributions (e.g. Ubuntu), follow the following steps. Get Bitcoin Package: apt-add-repository ppa:bitcoin/bitcoin Update: apt-get update Install: apt-get install bitcoind –y Reboot: reboot After rebooting confirm Bitcoin was installed by checking for the directory ~/.bitc...

func swap(x, y *int) { *x, *y = *y, *x } func main() { x := int(1) y := int(2) // variable addresses swap(&x, &y) fmt.Println(x, y) }

Detailed instructions on getting tdd set up or installed.

# 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...

# imports import weka.classifiers.bayes.BayesNet as BayesNet import weka.core.converters.ConverterUtils.DataSource as DS import weka.gui.graphvisualizer.GraphVisualizer as GraphVisualizer import javax.swing.JFrame as JFrame import os # load data data = DS.read(os.environ.get("MOOC_DATA...

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>

<div *ngFor="let item of items"> <p>{{item.name}}</p> <p>{{item.price}}</p> <p>{{item.description}}</p> </div>

<div *ngFor="let item of items; let i = index"> <p>Item number: {{i}}</p> </div> In this case, i will take the value of index, which is the current loop iteration.

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...