Tutorial by Examples: io

Often times you will want to have events for your objects. function spanOver(d,i){ var span = d3.select(this); span.classed("spanOver",true); } function spanOut(d,i){ var span = d3.select(this); span.classed("spanOver", false); } var div = d3.select('#divID')...

Detailed instructions on getting websphere-mq set up or installed.

Use keyword lists for 'options'-style parameters that contains multiple key-value pairs: def myfunc(arg1, opts \\ []) do # Function body end We can call the function above like so: iex> myfunc "hello", pizza: true, soda: false which is equivalent to: iex> myfunc("he...

Programs throw errors when for instance wrong input is given. Because of this, one needs to make sure that an error is thrown when actual wrong input is given. Because of that we need to check for an exact exception, for this example we will use the following exception: class WrongInputException(Ex...

Some of the additional attributes are parsed by the npm website like repository, bugs or homepage and shown in the infobox for this packages { "main": "server.js", "repository" : { "type": "git", "url": "git+https:/...

repeat(10) { i -> println("This line will be printed 10 times") println("We are on the ${i + 1}. loop iteration") }

Higher-order functions can be used to ensure that system resources are disposed, even when a treatment raises an exception. The pattern used by with_output_file allows a clean separation of concerns: the higher-order with_output_file functions takes care of managing the system resources bound to fi...

A region declared as a web application, as opposed to a web document. In this example, the application is a simple calculator that might add two numbers together. <div role="application"> <h1>Calculator</h1> <input id="num1" type="text"> +...

A definition of a term or concept. <span role="term" aria-labelledby="def1">Love</span> <span id="def1" role="definition">an intense feeling of deep affection.</span>

A checkable menuitem in a group of menuitemradio roles, only one of which can be checked at a time. <ul role="menu"> <li role="menuitemradio" aria-checked="true">Left</li> <li role="menuitemradio" aria-checked="false">C...

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...

A selectable item in a select list. <ul role="listbox"> <li role="option">Option 1</li> <li role="option">Option 2</li> <li role="option">Option 3</li> </ul>

An element whose implicit native role semantics will not be mapped to the accessibility API. <div style="float:left;">Some content on the left.</div> <div style="float:right;">Some content on the right</div> <div role="presentation" style=&...

A checkable input in a group of radio roles, only one of which can be checked at a time. <div role="radiogroup"> <input role="radio" type="radio" aria-checked="true"> One<br> <input role="radio" type="radio" aria...

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=...

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 ...

In C#, types can define custom Conversion Operators, which allow values to be converted to and from other types using either explicit or implicit casts. For example, consider a class that is meant to represent a JavaScript expression: public class JsExpression { private readonly string expres...

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...

First, ensure you have imported sessions from flask from flask import session To use session, a Flask application needs a defined SECRET_KEY. app = Flask(__name__) app.secret_key = 'app secret key' Sessions are implemented by default using a cookie signed with the secret key. This ensures t...