Queue/Usage: Difference between revisions
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E also has queues in the standard library such as <code><import:org.erights.e.examples.concurrency.makeQueue></code>, but they are designed for concurrency purposes and do not report emptiness but rather return a promise for the next element.
=={{header|EasyLang}}==
Uses the queue-definition given at [[Queue/Definition#EasyLang]]
<syntaxhighlight>
# queue definition
#
qu_enq 2
qu_enq 5
qu_enq 7
while qu_empty = 0
print qu_deq
.
</syntaxhighlight>
=={{header|Elena}}==
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