GBBopen 1.5 Reference -- on-queue-p

on-queue-p

on-queue-p queue-element => queue or nil [Generic Function]

Purpose
Determine if queue-element resides on a queue by returning the queue or nil.

Method signatures

on-queue-p (queue-element queue-element) => queue

Package :gbbopen

Module :queue

Arguments and values

queue-element		A GBBopen queue element object
queue		A GBBopen queue

Returns
The queue queue on which queue-element resides or nil if queue-element is not on a queue.

Example
Return the queue on which ksa resides:

  > (on-queue-p ksa)
  #<ordered-queue>
  >

on-queue-p