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[symfony#2638] Adding versionadded and type-hints to make Closure argument even more obvious

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Lines changed: 13 additions & 2 deletions

Original file line number	Diff line number	Diff line change
`@@ -70,7 +70,10 @@ This allows you to use jQuery-like selectors to traverse::`
`70`	`70`
`71`	`71`	`Anonymous function can be used to filter with more complex criteria::`
`72`	`72`
`73`		`- $crawler = $crawler->filter('body > p')->reduce(function ($node, $i) {`
	`73`	`+ use Symfony\Component\DomCrawler\Crawler;`
	`74`	`+ // ...`
	`75`	`+`
	`76`	`+ $crawler = $crawler->filter('body > p')->reduce(function (Crawler $node, $i) {`
`74`	`77`	`// filter even nodes`
`75`	`78`	`return ($i % 2) == 0;`
`76`	`79`	`});`
`@@ -137,10 +140,18 @@ Extract attribute and/or node values from the list of nodes::`
`137`	`140`
`138`	`141`	`Call an anonymous function on each node of the list::`
`139`	`142`
`140`		`- $nodeValues = $crawler->filter('p')->each(function ($node, $i) {`
	`143`	`+ use Symfony\Component\DomCrawler\Crawler;`
	`144`	`+ // ...`
	`145`	`+`
	`146`	`+ $nodeValues = $crawler->filter('p')->each(function (Crawler $node, $i) {`
`141`	`147`	`return $node->text();`
`142`	`148`	`});`
`143`	`149`
	`150`	`+..versionadded::`
	`151`	+ As seen here, in Symfony 2.3, the ``each`` and ``reduce`` Closure functions
	`152`	+ are passed a ``Crawler`` as the first argument. Previously, that argument
	`153`	+ was a:phpclass:`DOMNode`.
	`154`	`+`
`144`	`155`	`The anonymous function receives the position and the node (as a Crawler) as arguments.`
`145`	`156`	`The result is an array of values returned by the anonymous function calls.`
`146`	`157`

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