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In computer science, peek is an operation on certain abstract data types, specifically sequential collections such as stacks and queues, which returns the value of the top ("front") of the collection without removing the element from the collection. It thus returns the same value as operations such as "pop" or "dequeue", but does not modify the ...
One example where a deque can be used is the work stealing algorithm. [9] This algorithm implements task scheduling for several processors. A separate deque with threads to be executed is maintained for each processor. To execute the next thread, the processor gets the first element from the deque (using the "remove first element" deque operation).
The operation of adding an element to the rear of the queue is known as enqueue, and the operation of removing an element from the front is known as dequeue. Other operations may also be allowed, often including a peek or front operation that returns the value of the next element to be dequeued without dequeuing it.
Setting or reading a 16-bit value on such machines requires two commands, such as PEEK (A) + 256 * PEEK (A + 1) to read a 16-bit integer at address A, and POKE A, V followed by POKE A + 1, V / 256 to store a 16-bit integer V at address A. Some BASICs, even on 8-bit machines, have commands for reading and writing 16-bit values from memory.
Representation of a FIFO queue with enqueue and dequeue operations. Depending on the application, a FIFO could be implemented as a hardware shift register, or using different memory structures, typically a circular buffer or a kind of list. For information on the abstract data structure, see Queue (data structure).
Z.F. ran away, but other passengers confronted Davis, as the 57-year-old sat back down on the bus. Davis was later arrested by Bloomington Police, referring to the victim as “some Asian f----- c
Santa Claus’ suit may be one of his immutable features today, but he didn’t always wear red — and his closet used to be much more expansive. The legendary gift-giver’s style is just one ...
In computer science, the word dequeue can be used as: A verb meaning "to remove from a queue" An abbreviation for double-ended queue (more commonly, deque