Tutorial by Examples: g

XML Data can be written as is in XQuery and will be found in the output. The following code can be considered valid XQuery : <application> <id>MyApp</id> <name>My Application</name> <version>1.0</version> </application> Note that your XQ...

To address data from an XML input, XQuery uses XPath. It makes it easy to filter data and restructure it. Given the following XML input <?xml version="1.0" encoding="UTF-8"?> <applications> <application> <id>MyApp</id> <name>My...

Each signed integer type may be represented in any one of three formats; it is implementation-defined which one is used. The implementation in use for any given signed integer type at least as wide as int can be determined at runtime from the two lowest-order bits of the representation of value -1 ...

Resolving scoped services during application startup can be difficult, because there is no request and hence no scoped service. Resolving a scoped service during application startup via app.ApplicationServices.GetService<AppDbContext>() can cause issues, because it will be created in the sc...

from bs4 import BeautifulSoup import requests # Use the requests module to obtain a page res = requests.get('https://www.codechef.com/problems/easy') # Create a BeautifulSoup object page = BeautifulSoup(res.text, 'lxml') # the text field contains the source of the page # Now use a CSS ...

The image contained in the ImageView may not fit the exact size given to the container. In that case, the framework allows you to resize the image in a number of ways. Center <ImageView android:layout_width="20dp" android:layout_height="20dp" andr...

Scale the image uniformly (maintain the image's aspect ratio) so that both dimensions (width and height) of the image will be equal to or larger than the corresponding dimension of the view (minus padding). Official Docs When the image matches the proportions of the container: When the image is...

Scale the image uniformly (maintain the image's aspect ratio) so that both dimensions (width and height) of the image will be equal to or less than the corresponding dimension of the view (minus padding). Official Docs It will center the image and resize it to the smaller size, if both container s...

Scale the image using START. Scale the image using END. Official Docs FitStart This will fit to the smallest size of the container, and it will align it to the start. <ImageView android:layout_width="200dp" android:layout_height="200dp" android:src...

Scale the image using CENTER. Official Docs This expands the image to try to match the container and it will align it to the center, it will fit to the smaller size. Bigger height ( fit to width ) Same width and height.

Scale the image using FILL. Official Docs <ImageView android:layout_width="100dp" android:layout_height="200dp" android:src="@mipmap/ic_launcher" android:id="@+id/imageView" android:scaleType="fitXY&quo...

Make sure to have some packages installed: sudo apt-get install libpq-dev pip install psycopg2 Database settings for PostgreSQL: #myapp/settings/settings.py DATABASES = { 'default': { 'ENGINE': 'django.db.backends.postgresql', 'NAME': 'myprojectDB', 'USER': '...

How to create User Model Class namespace App\Model\Table; use Cake\ORM\Table; class UsersTable extends Table { public function initialize(array $config) { $this->table('users'); //define table name $this->displayField('username'); // unique or other special field of...

This is a client-server example. The process forks and runs client in the parent process and server in the child process: client connects to server and waits until server exits; server accepts connection from client, enables keepalive, and waits any signal. Keepalive is configured using the f...

When write() is called for a named or unnamed pipe or stream socket whose reading end is closed, two things happen: POSIX.1-2001 SIGPIPE signal is sent to the process that called write() POSIX.1-2004 SIGPIPE signal is sent to the thread that called write() EPIPE error is returned ...

If, during the conversion of: an integer type to a floating point type, a floating point type to an integer type, or a floating point type to a shorter floating point type, the source value is outside the range of values that can be represented in the destination type, the result is undefine...

When starting Zsh, it'll source the following files in this order by default: /etc/zsh/zshenv Used for setting system-wide environment variables; it should not contain commands that produce output or assume the shell is attached to a tty. This file will always be sourced, this cannot be overrid...

function onButtonClick() { navigator.bluetooth.requestDevice({filters: [{services: ['heart_rate']}]}) .then(device => { // Connecting to GATT Server... return device.gatt.connect(); }) .then(server => { // Getting Heart Rate Service... return server.getP...

Jersey is one of the many frameworks available to create Rest Services, This example will show you how to create Rest Services using Jersey and Spring Boot 1.Project Setup You can create a new project using STS or by using the Spring Initializr page. While creating a project, include the followi...

All proxy services events are logged in the wso2carbon log file (located in %CARBON_HOME%/repository/logs). If you want, you can have separate log files for each proxy service. Keep in mind, though, that they will still be logged in wso2carbon log file as well. To do so, you should change the log4...