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Once a virtual host has been added via the web application, directories will exist at: {CATALINA_HOME}\conf\Catalina\{Name} {CATALINA_HOME}\{App Base} To persist the virtual host after a restart, the server.xml file must be updated with the configuration. A Host element needs to be added inside...

2.04 Bash treats some paths as special and can do some network communication by writing to /dev/{udp|tcp}/host/port. Bash cannot setup a listening server, but can initiate a connection, and for TCP can read the results at least. For example, to send a simple web request one could do: exec 3</...

Load an image from an asset catalog using UIImage.FromBundle(string imageName) UIImage image = UIImage.FromBundle("ImageName"); // use the name of the image set from the asset catalog You can use the image for a UIImageView or anything else you need to do.

Asset catalog images can be used from storyboards like any other kind of image added to the project. They will be automatically populated as an option in UIImageView and other views which support adding an image.

Yii Framework 2.0 ships with built-in support for Pjax, a JavaScript library that reduces page load times. It accomplishes this by only updating the part of the page that has changed through Ajax, which can translate into substantial savings if you have many other assets on your pages. A few of our ...

Via jCenter including the following in your project's build.gradle file: compile 'com.google.android.exoplayer:exoplayer:rX.X.X' where rX.X.X is the your preferred version. For the latest version, see the project's Releases. For more details, see the project on Bintray.

First create a BroadcastReceiver class to handle the incoming Location updates: public class LocationReceiver extends BroadcastReceiver implements Constants { @Override public void onReceive(Context context, Intent intent) { if (LocationResult.hasResult(intent)) { ...

A repository pattern can be used to encapsulate data storage specific code in designated components. The part of your application, that needs the data will only work with the repositories. You will want to create a repository for each combination of item you store and your database technology. Read...

Run the following as root: useradd username

Pulls the code from a certain specified file into another file where the call was made. E.g. inside example.php <h1>Hello World!</h1> Inside page.php // header code get_template_part('example'); // rest of page code Output: // header code <h1>Hello World</h1> /...

int[string] aa = ["x": 5, "y": 6]; // The value can be set by its key: aa["x"] = 7; assert(aa["x"] == 7); // if the key does not exist will be added aa["z"] = 8; assert(aa["z"] == 8);

Scala's implementation of type classes is rather verbose. One way to reduce the verbosity is to introduce so-called "Operation Classes". These classes will automatically wrap a variable/value when they are imported to extend functionality. To illustrate this, let us first create a simple ...

Static initialization is suitable for most situations. When your application must delay the instantiation, use a non-default constructor or perform other tasks before the instantiation, and work in a multithreaded environment, you need a different solution. Cases do exist, however, in which you cann...

using System; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { var foo = new ClassWithDependency(); foo.DoSomething(); var bar = new InjectedDependency(); foo.Dependency = bar; ...

Data with header, separated by semicolons instead of commas file: table.csv index;name;occupation 1;Alice;Saleswoman 2;Bob;Engineer 3;Charlie;Janitor code: import pandas as pd pd.read_csv('table.csv', sep=';', index_col=0) output: name occupation index 1 Alice Sale...

To view the first or last few records of a dataframe, you can use the methods head and tail To return the first n rows use DataFrame.head([n]) df.head(n) To return the last n rows use DataFrame.tail([n]) df.tail(n) Without the argument n, these functions return 5 rows. Note that the slice ...

It is possible to send a message or data to all avaible connections. This can be achieved by first initializing the server and then using the socket.io object to find all sockets and then emit as you normally would emit to a single socket var io = require('socket.io')(80) // 80 is the HTTP port io...

It is possible to emit a message or data to all users except the one making the request: var io = require('socket.io')(80); io.on('connection', function (socket) { socket.broadcast.emit('user connected'); });

Middleware functions are functions that have access to the request object (req), the response object (res), and the next middleware function in the application’s request-response cycle. Middleware functions can execute any code, make changes to res and req objects, end response cycle and call next ...

void DispatchToMainThread(std::function<void()> callback) { // any thread QTimer* timer = new QTimer(); timer->moveToThread(qApp->thread()); timer->setSingleShot(true); QObject::connect(timer, &QTimer::timeout, [=]() { // main thread ...