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Queue/Definition: Difference between revisions

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Queue/Definition (view source)

Revision as of 19:09, 19 November 2020

292 bytes removed ,  3 years ago
→‎{{header|Wren}}: Now uses Queue class from new Wren-queue module.
(→‎{{header|Wren}}: Now uses Queue class from new Wren-queue module.)
Line 5,312:
 
=={{header|Wren}}==
{{libheader|Wren-queue}}
<lang ecmascript>class Queue {▼
The above module contains a suitable Queue class.
construct new() { _queue = [] }
▲<lang ecmascript>classimport Queue"/queue" {for Queue
 
count { _queue.count }
 
isEmpty { count == 0 }
 
clear() { _queue.clear() }
 
peek { (!isEmpty) ? _queue[0] : null }
 
push(item) { _queue.add(item) }
 
pop() {
var item = peek
if (item != null) {
_queue.removeAt(0)
}
return item
}
 
toList { _queue[0..-1] }
}
 
var q = Queue.new()
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