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XML Schema Best Practices for Databinding

empty elements

Most programming languages implement unitialized values as NULL, ZERO, random data, something special (JavaScript: undefined) or an empty string. In XML an element can be empty in two ways and in DOM the textContent property is an empty string for both.

Valid examples:

<TodoItem/>

Anzeigen

Eine Route und Template show erstellen mit

Titel als <H/>
Inhalt als <div/>

Die ID soll übergeben (/show/1) und geladen (SELECT * FROM page WHERE id = 1) werden.

Speichern

XPath rules

undefined

undefined should not be assigned

``(//initialiser|//assignmentExpression)//unaryExpression//IDENTIFIER[@tokenValue="undefined"]```

var x = undefined; // bad
var x; // ok
x = undefined; // bad
if (x === undefined) { // ok*
 undefined = x; // totally NOT ok ;)

About

minimal example of using [phantomjs] with [qunit]

$ phantomjs run-qunit.js file://`pwd`/test.html
'waitFor()' finished in 200ms.
Tests completed in 21 milliseconds.
5 tests of 5 passed, 0 failed.

Installation

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old-tool:old-rule

new-name

wishlist

php_codesniffer:ValidDefaultValueNotAtEnd

?

	<?php
	/**
	* https://wiki.php.net/rfc/engine_warnings
	*/

	// old-Level: Message > new-Level \| phpstan-level

	#$o = null;
	// Warning: Creating default object from empty value > Error: Attempt to assign property "p" on null \| 2
	#$o->p = 0;

	0 ansible2 available \
	[ =2.4.2 =2.4.6 =2.8 =stable ]
	1 *emacs=latest enabled [ =25.3 ]
	2 httpd_modules available [ =1.0 ]
	3 memcached1.5 available \
	[ =1.5.1 =1.5.16 =1.5.17 ]
	4 *nginx1.12=latest enabled [ =1.12.2 ]
	5 postgresql9.6 available [ =9.6.6 =9.6.8 ]
	6 postgresql10 available [ =10 ]
	7 *python3=latest enabled [ =3.6.2 ]

	FROM amazonlinux:2

	RUN amazon-linux-extras install epel
	RUN amazon-linux-extras install php7.2=7.2.13
	RUN yum install -y http://rpms.remirepo.net/enterprise/remi-release-7.rpm && \
	yum install -y yum-utils && \
	yum-config-manager --enable remi-safe
	RUN yum install -y --enablerepo=remi-php72 php-mbstring php-pecl-libsodium
	RUN yum install -y --enablerepo=remi-php72 php-pecl-uopz-5.1.0

	<?php
	$c = curl_init();
	curl_setopt_array($c, array(
	CURLOPT_URL => $argv[1],
	CURLOPT_RETURNTRANSFER => 1,
	CURLOPT_VERBOSE => true
	));
	$r = curl_exec($c);
	if (curl_errno($c)) {
	die(curl_error($c));