Queue/Definition: Difference between revisions
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(→{{header|Wren}}: Now uses Queue class from new Wren-queue module.) |
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=={{header|Wren}}== |
=={{header|Wren}}== |
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{{libheader|Wren-queue}} |
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| ⚫ | |||
The above module contains a suitable Queue class. |
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construct new() { _queue = [] } |
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| ⚫ | |||
count { _queue.count } |
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isEmpty { count == 0 } |
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clear() { _queue.clear() } |
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peek { (!isEmpty) ? _queue[0] : null } |
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push(item) { _queue.add(item) } |
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pop() { |
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var item = peek |
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if (item != null) { |
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_queue.removeAt(0) |
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} |
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return item |
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} |
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toList { _queue[0..-1] } |
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} |
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var q = Queue.new() |
var q = Queue.new() |
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