Tutorial by Examples: ev

Vue provides event modifiers for v-on by calling directive postfixes denoted by a dot. .stop .prevent .capture .self .once For examples: <!-- the click event's propagation will be stopped --> <a v-on:click.stop="doThis"></a> <!-- the submit event will no...

Data types to string formatting Data types like int, float, double, long, boolean can be formatted to string using String.valueOf(). String.valueOf(1); //Output -> "1" String.valueOf(1.0); //Output -> "1.0" String.valueOf(1.2345); //Output -> "1.2345" Stri...

.profile is read by most shells on startup, including bash. However, .bash_profile is used for configurations specific to bash. For general initialization code, put it in .profile. If it's specific to bash, use .bash_profile. .profile isn't actually designed for bash specifically, .bash_profile is...

Eventloop in pseudo code An event loop is a loop that waits for events and then reacts to those events while true: wait for something to happen react to whatever happened Example of a single-threaded HTTP server with no event loop while true: socket = wait for the next TCP c...

2009 3rd March : The project was named as "node" 1st October : First very early preview of npm, the Node package manager 8th November : Ryan Dahl's (Creator of Node.js) Original Node.js Talk at JSConf 2009 2010 Express: A Node.js web development framework Socket.io initial...

To use OpenGL ES in your application you must add this to the manifest: <uses-feature android:glEsVersion="0x00020000" android:required="true"/> Create your extended GLSurfaceView: import static android.opengl.GLES20.*; // To use all OpenGL ES 2.0 methods and constants...

While using Image/Colour as an background in a CardView, You might end up with slight white paddings (If default Card colour is white) on the edges. This occurs due to the default rounded corners in the Card View. Here is how to avoid those margins in Pre-lollipop devices. We need to use an attribu...

You now need to register the Expander, in order for it to be used by the Razor View Engine. Just add this in the ConfigureServices of your Startup class. public void ConfigureServices(IServiceCollection services) { services.Configure<RazorViewEngineOptions>(options => { opti...

Without splatting it is very cumbersome to try and pass values down through the call stack. But if you combine splatting with the power of the @PSBoundParameters then you can pass the top level parameter collection down through the layers. Function Outer-Method { Param ( [string...

If Errorlevel 1 ( Echo Errorlevel is 1 or higher REM The phrase "1 or higher" is used because If Errorlevel 1 statement means: REM If %Errorlevel% GEQ 1 REM Not If %Errorlevel% EQU 1 ) ...

Especially in a ListView, you can run into performance problems by doing too many findViewById() calls during scrolling. By using the ViewHolder pattern, you can save these lookups and improve your ListView performance. If your list item contains a single TextView, create a ViewHolder class to stor...

Check the right software versions are installed: ansible >=2.0 python >=2.6 shade module for python $ansible --version ansible 2.2.0.0 $python --version Python 2.7.5 Install 'shade' the python component used to pilot openstack. $pip install shade Note : if you use a company...

If you have PHP installed locally and you would like to use PHP's built-in development server to serve your application, you may use the serve Artisan command. This command will start a development server at http://localhost:8000: php artisan serve Of course, more robust local development option...

GTM simplifies the whole process of managing tags.In GTM terminology We put a GTM javascript snippet on the concerned page,in portal_normal.vm in custom theme in liferay, containing the GTM id and a data layer structure(if needed) to map values from page to variables Corresponding to data layer ...

Add-ons can be installed as: Normal add-ons, which are installed until uninstalled Temporary Add-ons (extensions only): are only installed until Firefox is restarted, or can manually uninstalled earlier. Using jpm run (Add-on SDK only): Automatically runs Firefox using a temporary profile with ...

//Add a DateTime Validation to column F var val4 = worksheet.DataValidations.AddDateTimeValidation("F:F"); //For DateTime Validation, you have to set error message to true val4.ShowErrorMessage = true; //Minimum allowed date val4.Formula.Value = new DateTime(2017,03,15, 01, 0,0); /...

The EntityDamage event is thrown when an Entity is damaged. EntityDamageEvent @EventHandler public void onEntityDamage(EntityDamageEvent e) { DamageCause cause = e.getCause(); //Get the event DamageCause double rawDamage = e.getDamage(); //Returns the damage before any calculation...

This example is about changing the form depending on decisions the user did with the form previously. In my special case, I needed to disable a selectbox, if a certain checkbox wasn't set. So we have the FormBuilder, where we'll set the EventListener on the FormEvents::PRE_SUBMIT event. We're usin...

We can create Singleton class in such a way that developers are forced to used the shared instance (singleton object) instead of creating their own instances. @implementation MySingletonClass + (instancetype)sharedInstance { static MySingletonClass *_sharedInstance = nil; static dispa...

JMeter can also can be used for recording mobile performance testing. Mobile scripts recording is very similar to web application scripts recording. Configure JMeter Configure “JMeter Templates” as specified in chapter 1. Configure your mobile phone After the JMeter configuration is prepared...