| abstract class $PQ{T < $IS_LT{T}} < $DISPENSER{T} |
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| **** | Standard priority queue abstraction. Returns the element with the highest priority |
| $DISPENSER{_} | $STR | $CONTAINER{_} | $ELT{_} | $ELT |
| A_PQ{_} |
| clear; |
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| **** | Remove all elements from the queue |
| insert(e: T); |
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| **** | Insert the element "e" into the priority queue |
| is_empty: BOOL; |
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| **** | Return true if the queue is empty |
| pop: T; |
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| **** | Remove and return the top most element (alias for "remove") |
| top: T; |
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| **** | Return the top element of the queue. |
