Tutorial by Examples: ga

Getting all serial ports information from Windows is often necessary, you may want to give the user a choice of ports to open, or check if your device is connected. In addition, some ports just cannot be opened using a "COMx" string and need to be opened using a device name. Some older v...

In Rust the xmpp-addr (docs) crate can be used to manipulate JIDs. To split a JID into its component parts (without validating that those parts are valid), the Jid::split function may be used: let (lp, dp, rp) = Jid::split("[email protected]")?; assert_eq!(lp, Some("feste")); ...

Docs: 1.x -> 2.x upgrade guide, registering an element, shared style modules. <link rel="import" href="bower_components/polymer/polymer-element.html"> <dom-module id="element-name"> <template> <!-- Use one of these style declaration...

Docs: extending elements, inherited templates. Instead of Polymer.Element, a custom element can extend a different element: class ParentElement extends Polymer.Element { /* ... */ } class ChildElement extends ParentElement { /* ... */ } To change or add to the parent's template, over...

Docs: mixins, hybrid elements. Defining a class expression mixin to share implementation between different elements: <script> MyMixin = function(superClass) { return class extends superClass { // Code that you want common to elements. // If you're going to override a...

To create a NSUserActivity object, your app must declare the types of activities it supports in its Info.plist file. Supported activities are defined by your application and should be unique. An activity is defined using a reverse-domain style naming scheme (i.e. "com.companyName.productName.ac...

You can make function passed to test() method async - then you can use await keyword. Your test will wait until Promises resolve and testing asynchronous code becomes easier and more readable. In the following example call that returns a Promise is changeset.validate(). Please notice also wrapping s...

Navigation bars are essentially a list of links, so the ul and li elements are used to encase navigation links. <ul> <li><a href="#">Home</a></li> <li><a href="#">About</a></li> <li><a href="#">...

To make a navigation bar using the HTML5 nav element, encase the links within the nav tag. <nav> <a href="#">Home</a> <a href="#">About</a> <a href="#">Contact</a> </nav>

For creating custom annotations we need to decide Target - on which these annotations will work on like field level, method level, type level etc. Retention - to what level annotation will be available. For this, we have built in custom annotations. Check out these mostly used ones: @Target...

You can create a new notebook in RStudio with the menu command File -> New File -> R Notebook If you don't see the option for R Notebook, then you need to update your version of RStudio. For installation of RStudio follow this guide

When a notebook .Rmd is saved, an .nb.html file is created alongside it. This file is a self-contained HTML file which contains both a rendered copy of the notebook with all current chunk outputs (suitable for display on a website) and a copy of the notebook .Rmd itself. More info can be found at R...

The procedures bellow will temporarily disable all Excel features at WorkBook and WorkSheet level FastWB() is a toggle that accepts On or Off flags FastWS() accepts an Optional WorkSheet object, or none If the ws parameter is missing it will turn all features on and off for all WorkSh...

fun startNewActivity(){ val intent: Intent = Intent(context, Activity::class.java) startActivity(intent) } You can add extras to the intent just like in Java. fun startNewActivityWithIntents(){ val intent: Intent = Intent(context, Activity::class.java) intent.putExtra(KEY_NA...

This is a single value metrics aggregation that calculates the average of the numeric values that are extracted from the aggregated documents. POST /index/_search? { "aggs" : { "avd_value" : { "avg" : { "field" : "name_of_field" } } ...

A single-value metrics aggregation that calculates an approximate count of distinct values. Values can be extracted either from specific fields in the document or generated by a script. POST /index/_search?size=0 { "aggs" : { "type_count" : { "ca...

A multi-value metrics aggregation that computes stats over numeric values extracted from the aggregated documents. These values can be extracted either from specific numeric fields in the documents, or be generated by a provided script. The extended_stats aggregations is an extended version of the ...

This example will show you back navigation which is expected generally in most of the flows. You will have to add following code to every screen depending on expected behavior. There are 2 cases: If there are more than 1 screen on stack, device back button will show previous screen. If there is ...

<a-scene> <a-entity gltf-model="url(https://cdn.rawgit.com/KhronosGroup/glTF-Sample-Models/9176d098/1.0/Duck/glTF/Duck.gltf)" position="0 0 -5"></a-entity> </a-scene>

<a-scene> <a-assets> <a-asset-item id="duck" src="https://cdn.rawgit.com/KhronosGroup/glTF-Sample-Models/9176d098/1.0/Duck/glTF/Duck.gltf"></a-asset-item> </a-assets> <a-entity gltf-model="#duck" position="0 0 -5&quo...