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  2. Queue (abstract data type) - Wikipedia

    en.wikipedia.org/wiki/Queue_(abstract_data_type)

    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.

  3. Multiple inheritance - Wikipedia

    en.wikipedia.org/wiki/Multiple_inheritance

    Prior to Java 8, Java was not subject to the Diamond problem risk, because it did not support multiple inheritance and interface default methods were not available. JavaFX Script in version 1.2 allows multiple inheritance through the use of mixins. In case of conflict, the compiler prohibits the direct usage of the ambiguous variable or function.

  4. Peek (data type operation) - Wikipedia

    en.wikipedia.org/wiki/Peek_(data_type_operation)

    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.

  5. Double-ended queue - Wikipedia

    en.wikipedia.org/wiki/Double-ended_queue

    In computer science, a double-ended queue (abbreviated to deque, / d ɛ k / DEK [1]) is an abstract data type that generalizes a queue, for which elements can be added to or removed from either the front (head) or back (tail). [2]

  6. Bucket queue - Wikipedia

    en.wikipedia.org/wiki/Bucket_queue

    A bucket queue is a data structure that implements the priority queue abstract data type: it maintains a dynamic collection of elements with numerical priorities and allows quick access to the element with minimum (or maximum) priority.

  7. RabbitMQ - Wikipedia

    en.wikipedia.org/wiki/RabbitMQ

    RabbitMQ is an open-source message-broker software (sometimes called message-oriented middleware) that originally implemented the Advanced Message Queuing Protocol (AMQP) and has since been extended with a plug-in architecture to support Streaming Text Oriented Messaging Protocol (STOMP), MQ Telemetry Transport (MQTT), and other protocols.

  8. Priority queue - Wikipedia

    en.wikipedia.org/wiki/Priority_queue

    Java's library contains a PriorityQueue class, which implements a min-priority-queue as a binary heap. .NET's library contains a PriorityQueue class, which implements an array-backed, quaternary min-heap. Scala's library contains a PriorityQueue class, which implements a max-priority-queue.

  9. Message queue - Wikipedia

    en.wikipedia.org/wiki/Message_queue

    There is a Java standard called Java Message Service, which has several proprietary and free software implementations. Real-time operating systems (RTOSes) such as VxWorks and QNX encourage the use of message queuing as the primary inter-process or inter-thread communication mechanism. This can result in integration between message passing and ...