Tutorial by Examples: g

A dialog is an application window that is designed to interrupt the current processing of an application in order to prompt the user to enter information or require a response. <div role="dialog"> <p>Are you sure?</p> <button role="button">Yes</b...

A grid is an interactive control which contains cells of tabular data arranged in rows and columns, like a table. <table role="grid"> <thead> <!-- etc --> </thead> <tbody> <!-- etc --> </tbody> </table>

A cell in a grid or treegrid. <table role="grid"> <thead> <!-- etc --> </thead> <tbody> <tr> <td role="gridcell">17</td> <td role="gridcell">64</td> <td role="gr...

A set of user interface objects which are not intended to be included in a page summary or table of contents by assistive technologies. <div role="group"> <button role"button">Previous</button> <button role"button">Next</button> &lt...

A heading for a section of the page. <h1 role="heading">Introduction</h1> <p>Lorem ipsum...</p>

A container for a collection of elements that form an image. <figure role="img"> <img alt="A cute cat." src="albert.jpg"> <figcaption>This is my cat, Albert.</figcaption> <figure>

A type of live region where new information is added in meaningful order and old information may disappear. <ul role="log"> <li>User 1 logged in.</li> <li>User 2 logged in.</li> <li>User 1 logged out.</li> </ul>

A collection of navigational elements (usually links) for navigating the document or related documents. <ul role="navigation"> <li><a href="/">Home</a></li> <li><a href="/about">About</a></li> <li>&lt...

An element that displays the progress status for tasks that take a long time. <progress role="progressbar" value="25" max="100">25%</progress>

A large perceivable section of a web page or document, that the author feels is important enough to be included in a page summary or table of contents, for example, an area of the page containing live sporting event statistics. <div role="region"> Home team: 4<br> Away t...

A group of radio buttons. <div role="radiogroup"> <input role="radio" type="radio" aria-checked="true"> One<br> <input role="radio" type="radio" aria-checked="false"> Two<br> <input role=...

A group containing one or more row elements in a grid. <table> <thead role="rowgroup"> <!-- etc --> </thead> <tbody role="rowgroup"> <!-- etc --> </tbody> </table>

A grid whose rows can be expanded and collapsed in the same manner as for a tree.

import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.IOException; import java.nio.charset.StandardCharsets; import java.nio.file.Files; import java.nio.file.Paths; public class ReadingUTF8TextFile { public static void main(String[] args) throws IOException { ...

import java.io.BufferedWriter; import java.io.IOException; import java.nio.charset.StandardCharsets; import java.nio.file.Files; import java.nio.file.Paths; public class WritingUTF8TextFile { public static void main(String[] args) throws IOException { //StandardCharsets is avail...

import java.nio.charset.StandardCharsets; import java.util.Arrays; public class GetUtf8BytesFromString { public static void main(String[] args) { String str = "Cyrillic symbol Ы"; //StandardCharsets is available since Java 1.7 //for ealier version use ...

Query to create table on db CREATE TABLE `user` ( `id` smallint(5) unsigned NOT NULL AUTO_INCREMENT, `name` varchar(30) NOT NULL, `course` smallint(5) unsigned DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB; CREATE TABLE `course` ( `id` smallint(5) unsigned NOT NULL AUTO_INCREMENT, `nam...

Given a file sample: hello Hello HELLO_there A normal grep for "hello" returns: $ grep "hello" sample hello Using -i allows to ignore case and match any "hello": $ grep -i "hello" sample hello Hello HELLO_there

A module is an importable file containing definitions and statements. A module can be created by creating a .py file. # hello.py def say_hello(): print("Hello!") Functions in a module can be used by importing the module. For modules that you have made, they will need to be in t...

Suppose you have types like the following: interface IThing { } class Thing : IThing { } LINQ allows you to create a projection that changes the compile-time generic type of an IEnumerable<> via the Enumerable.Cast<>() and Enumerable.OfType<>() extension methods. IEnumerabl...