ZQueue
Related Docs:
object ZQueue
| package zio
Waits until the queue is shutdown.
Waits until the queue is shutdown.
The IO returned by this method will not resume until the queue has been shutdown.
If the queue is already shutdown, the IO will resume right away.
How many elements can hold in the queue
true if shutdown has been called.
Places one value in the queue.
For Bounded Queue: uses the BackPressure Strategy, places the values in the queue and always returns true.
For Bounded Queue: uses the BackPressure Strategy, places the values in the queue and always returns true.
If the queue has reached capacity, then
the fiber performing the offerAll will be suspended until there is room in
the queue.
For Unbounded Queue: Places all values in the queue and returns true.
For Sliding Queue: uses Sliding Strategy
If there is room in the queue, it places the values otherwise it removes the old elements and
enqueues the new ones. Always returns true.
For Dropping Queue: uses Dropping Strategy,
It places the values in the queue but if there is no room it will not enqueue them and return false.
Interrupts any fibers that are suspended on offer or take.
Interrupts any fibers that are suspended on offer or take.
Future calls to offer* and take* will be interrupted immediately.
Retrieves the size of the queue, which is equal to the number of elements in the queue.
Retrieves the size of the queue, which is equal to the number of elements in the queue. This may be negative if fibers are suspended waiting for elements to be added to the queue.
Removes the oldest value in the queue.
Removes the oldest value in the queue. If the queue is empty, this will return a computation that resumes when an item has been added to the queue.
Removes all the values in the queue and returns the list of the values.
Removes all the values in the queue and returns the list of the values. If the queue is empty returns empty list.
Takes up to max number of values in the queue.
Transforms elements enqueued into this queue with a pure function.
Transforms elements enqueued into this queue with an effectful function.
Transforms elements enqueued into and dequeued from this queue with the specified pure functions.
Transforms elements enqueued into and dequeued from this queue with the specified effectual functions.
Applies a filter to elements enqueued into this queue.
Applies a filter to elements enqueued into this queue. Elements that do not pass the filter will be immediately dropped.
Like filterInput, but uses an effectful function to filter the elements.
Filters elements dequeued from the queue using the specified predicate.
Filters elements dequeued from the queue using the specified effectual predicate.
Transforms elements dequeued from this queue with a function.
Transforms elements dequeued from this queue with an effectful function.
Take the head option of values in the queue.
Takes a number of elements from the queue between the specified minimum and maximum.
Takes a number of elements from the queue between the specified minimum and maximum. If there are fewer than the minimum number of elements available, suspends until at least the minimum number of elements have been collected.
Takes the specified number of elements from the queue.
Takes the specified number of elements from the queue. If there are fewer than the specified number of elements available, it suspends until they become available.
Alias for both.
Alias for both.
(Since version 2.0.0) use ZStream
Like bothWith, but tuples the elements instead of applying a function.
Like bothWith, but tuples the elements instead of applying a function.
(Since version 2.0.0) use ZStream
Like bothWithM, but uses a pure function.
Like bothWithM, but uses a pure function.
(Since version 2.0.0) use ZStream
Creates a new queue from this queue and another.
Creates a new queue from this queue and another. Offering to the composite queue will broadcast the elements to both queues; taking from the composite queue will dequeue elements from both queues and apply the function point-wise.
Note that using queues with different strategies may result in surprising behavior.
For example, a dropping queue and a bounded queue composed together may apply f
to different elements.
(Since version 2.0.0) use ZStream
A
ZQueue[RA, RB, EA, EB, A, B]is a lightweight, asynchronous queue into which values of typeAcan be enqueued and of which elements of typeBcan be dequeued. The queue's enqueueing operations may utilize an environment of typeRAand may fail with errors of typeEA. The dequeueing operations may utilize an environment of typeRBand may fail with errors of typeEB.