Provides an abstract data type representing a queue (first in first out) data structure.
procedure, public, nopass :: is_fifo => queue_is_fifo | Returns true, as queues are a first in first out data type. |
An abstract data type representing the queue structure. This is largely a placeholder type, in case some methods specific to queues are added at a later time. However, it does implement the is_fifo method.
Returns .true.
, indicating that queues are a "first in first
out" data structure.