Tutorial by Examples: g

Each scenario tests one behaviour Scenarios are written in a declarative way Avoid incidental details inside the scenario Omit the obvious Avoid conjunctive steps Keep your scenarios short Don’t have to many scenarios in the same feature Use descriptive scenario names Have only one When st...

When trying to filter some record using multiple value in a selector. First you must use the px:PXMultiSelector in the aspx page instead of the normal px:PXSelector. Then after you must create yourself a graph containing at least three views and a view delegate. you will also need at least a basic ...

Suppose this struct is defined and compiled with a 32 bit compiler: struct test_32 { int a; // 4 byte short b; // 2 byte int c; // 4 byte } str_32; We might expect this struct to occupy only 10 bytes of memory, but by printing sizeof(str_32) we see it uses 12 by...

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")); ...

Following example will help to give equal space to an item in GridLayout. ItemOffsetDecoration.java public class ItemOffsetDecoration extends RecyclerView.ItemDecoration { private int mItemOffset; private int spanCount = 2; public ItemOffsetDecoration(int itemOffset) { ...

Here we can find some useful method using PackageManager, Below method will help to get the app name using package name private String getAppNameFromPackage(String packageName, Context context) { Intent mainIntent = new Intent(Intent.ACTION_MAIN, null); mainIntent.addCategory(Intent.CATE...

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...

Docs: data binding, attribute binding, binding to array items, computed bindings. Don't forget: Polymer camel-cases properties, so if in JavaScript you use myProperty, in HTML you would use my-property. One way binding: when myProperty changes, theirProperty gets updated: <some-element t...

Listing services systemctl To list running services systemctl --failed To list failed services Managing Targets (Similar to Runlevels in SysV) systemctl get-default To find the default target for your system systemctl set-default <target-name> To set the default target for your syst...

\documentclass[12pt]{article} \usepackage{titleps} \usepackage{fancyhdr} \usepackage{graphicx} \usepackage{lipsum} % for dummy text \pagestyle{myheadings} \pagestyle{fancy} \fancyhf{} \setlength{\headheight}{30pt} \renewcommand{\headrulewidth}{4pt} \renewcommand{\footrulewidth}{2pt...

\documentclass[12pt]{article} \usepackage{lastpage} \usepackage{fancyhdr} \usepackage{graphicx} \usepackage{lipsum} % for dummy text \pagestyle{myheadings} \pagestyle{fancy} \fancyhf{} \setlength{\headheight}{30pt} \renewcommand{\headrulewidth}{1pt} \renewcommand{\footrulewidth}{2p...

#include opencv2/opencv.hpp> #include vector> using namespace std; using namespace cv; int main() { Mat3b img = imread("test.jpg"); imshow("Original", img); // Cluster int K = 8; int n = img.rows * img.cols; Mat data = img.reshape(1, n); data.convertTo(data, CV_32F); ...

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...

There are three different properties for styling list-items: list-style-type, list-style-image, and list-style-position, which should be declared in that order. The default values are disc, outside, and none, respectively. Each property can be declared separately, or using the list-style shorthand p...

For example without a barrel, a consumer would need three import statements: import { HeroComponent } from '../heroes/hero.component.ts'; import { Hero } from '../heroes/hero.model.ts'; import { HeroService } from '....

public enum BookCode { _10A("Simon Haykin", "Communication System"), _42B("Stefan Hakins", "A Brief History of Time"), E1("Sedra Smith", "Electronics Circuits"); private String author; private String title; ...

Like list, simplest function over iolist and bitstring is: -spec loop(iolist()) -> ok | {ok, iolist} . loop(<<>>) -> ok; loop(<<Head, Tail/bitstring>>) -> loop(Tail); loop(<<Rest/bitstring>>) -> {ok, Rest} You can call it like this: lo...

Recursive function use their states to loop. When you spawn new process, this process will be simply a loop with some defined state.