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              <h3>Iteration in LESS 1.7 style</h3>
<p>Example for article
  "<a href="http://www.pnml.kz/2014/06/detached-rulesets-in-less-as-a-lambda-expressions/">
    Detached rulesets in LESS as a lambda-expressions</a>"

              // generic list iteration mixin for LESS 1.7
// arguments:
//   @array - list of items to iterate
//   @lambda - ruleset with loop body
// inside @lambda block folowwing variables are available:
//   @item – current list item 
//   @index – its position in the list
//   @array – the list itself and
//   @length – total amount of list items
// more info: http://www.pnml.kz/2014/06/detached-rulesets-in-less-as-a-lambda-expressions/
.foreach(@array, @lambda)
		.iterator(@index) when (@index > 1)
			.iterator((@index - 1));
			@item: extract(@array, @index);
		@length: length(@array);

// usage examples

.foreach(#a6c8e0 #fecc94 #c8e793 #b2e1d9 #f9f9ad,
	li:nth-child(@{length}n+@{index}) { background: @item; }

.foreach(home ok cancel error book, {
    #icon-@{item} {
        background-image: url("../images/@{item}.png");

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