Queue/Usage: Difference between revisions
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pop Q ;# ==> foo |
pop Q ;# ==> foo |
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peek Q ;# ==> bar</lang> |
peek Q ;# ==> bar</lang> |
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=={{header|Wart}}== |
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See [[FIFO#Wart|FIFO]] for implementation. |
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<pre>q <- (queue) |
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empty? q |
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=> 1 |
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enq 1 q |
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empty? q |
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=> nil |
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enq 2 q |
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len q |
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=> 2 |
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deq q |
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len q |
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=> 1</pre> |
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=={{header|XPL0}}== |
=={{header|XPL0}}== |
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