Tutorial by Examples: u

angular.component("SampleComponent", { bindings: { title: '@', movies: '<', reservation: "=", processReservation: "&" } }); Here we have all binding elements. @ indicates that we need a very basic binding, from the parent scope ...

CREATE TABLE [dbo].[ProcessLog]( [LogId] [int] IDENTITY(1,1) NOT NULL, [LogType] [varchar](20) NULL, [StartTime] [datetime] NULL, [EndTime] [datetime] NULL, [RunMinutes] AS (datediff(minute,coalesce([StartTime],getdate()),coalesce([EndTime],getdate()))) This gives run difference in minutes ...

The next example can be used to determine whether a enumeration has the FlagsAttribute specified. The methodology used is based on Reflection. This example will give a True result: Dim enu As [Enum] = New FileAttributes() Dim hasFlags As Boolean = enu.GetType().GetCustomAttributes(GetType(FlagsAt...

The next example is intended to count the amount of flags in the specified flag combination. The example is provided as a extension method: <DebuggerStepThrough> <Extension> <EditorBrowsable(EditorBrowsableState.Always)> Public Function CountFlags(ByVal sender As [Enum]) As In...

The next code illustrates how to find the nearest value of a Enum. First we define this Enum that will serve to specify search criteria (search direction) Public Enum EnumFindDirection As Integer Nearest = 0 Less = 1 LessOrEqual = 2 Greater = 3 GreaterOrEqual = 4 End Enum...

There are a number of guidelines to follow when creating and using header files in a C project: Idemopotence If a header file is included multiple times in a translation unit (TU), it should not break builds. Self-containment If you need the facilities declared in a header file, you sh...

Google's Include What You Use project, or IWYU, ensures source files include all headers used in the code. Suppose a source file source.c includes a header arbitrary.h which in turn coincidentally includes freeloader.h, but the source file also explicitly and independently uses the facilities from ...

If a singleshot timer is required, it is quiet handy to have the slot as lambda function right in the place where the timer is declared: QTimer::singleShot(1000, []() { /*Code here*/ } ); Due to this Bug (QTBUG-26406), this is way is only possible since Qt5.4. In earlier Qt5 versions it has to ...

Debian, Ubuntu and CentOS Add the official repository Debian/Ubuntu curl -L https://packages.gitlab.com/install/repositories/runner/gitlab-ci-multi-runner/script.deb.sh | sudo bash CentOS curl -L https://packages.gitlab.com/install/repositories/runner/gitlab-ci-multi-runner/script.rpm.sh ...

The config location for your runner is: Debian/Ubuntu/CentOS /etc/gitlab-runner/config.toml if run as root ~/.gitlab-runner/config.toml if run as non-root Windows config.toml where your binary is located A minimal config.toml can look like this: concurrent = 1 [[runners]] name = "E...

Org provides a full markup language which helps structuring the document, and is reflected as accurately as possible when exporting to other formats (like HTML or LaTeX). Structure Document title #+TITLE: This is the title of the document Sectioning * First level ** Second level Lists Or...

Setup First, install the necessary packages with: npm install express cors mongoose Code Then, add dependencies to server.js, create the database schema and the name of the collection, create an Express.js server, and connect to MongoDB: var express = require('express'); var cors = require('...

passwd

Run the following as root: passwd username

Run the following as root: useradd username

Run the following as root: userdel username

Run the following as root: userdel -r username

groups More detailed information about user and group numerical IDs can be found with the id command.

groups username More detailed information about user and group numerical IDs can be found with id username.

This can be useful if you're writing a game or something that needs to execute a piece of code every a few seconds. import android.os.Handler; public class Timer { private Handler handler; private boolean paused; private int interval; private Runnable task = new Runnable ...