protocol

queuep

Queue protocol.

Availability:

logtalk_load(queues(loader))

Author: Paulo Moura

Version: 1:3:0

Date: 2020-12-09

Compilation flags:

static

Dependencies:

(none)

Remarks:

(none)

Inherited public predicates:

(none)

Public predicates

empty/1

True if the queue is empty.

Compilation flags:

static

Template:

empty(Queue)

Mode and number of proofs:

empty(@queue) - zero_or_one

---

head/2

Unifies Head with the first element of the queue.

Compilation flags:

static

Template:

head(Queue,Head)

Mode and number of proofs:

head(+queue,?term) - zero_or_one

---

join/3

Adds the new element at the end of the queue.

Compilation flags:

static

Template:

join(Element,Queue,NewQueue)

Mode and number of proofs:

join(@term,+queue,-queue) - zero_or_one

---

join_all/3

Adds the new elements at the end of the queue. The elements are added in the same order that they appear in the list.

Compilation flags:

static

Template:

join_all(List,Queue,NewQueue)

Mode and number of proofs:

join_all(+list,+queue,-queue) - zero_or_one

---

jump/3

Adds the new element at the front of the queue.

Compilation flags:

static

Template:

jump(Element,Queue,NewQueue)

Mode and number of proofs:

jump(@term,+queue,-queue) - zero_or_one

---

jump_all/3

Adds the new elements at the front of the queue. The last element in the list will be at the front of the queue.

Compilation flags:

static

Template:

jump_all(Elements,Queue,NewQueue)

Mode and number of proofs:

jump_all(+list,+queue,-queue) - zero_or_one

---

jump_all_block/3

Adds the new elements as a block at the front of the queue. The first element in the list will be at the front of the queue.

Compilation flags:

static

Template:

jump_all_block(Elements,Queue,NewQueue)

Mode and number of proofs:

jump_all_block(+list,+queue,-queue) - zero_or_one

---

append/3

Appends two queues. The new queue will have the elements of the first queue followed by the elements of the second queue.

Compilation flags:

static

Template:

append(Queue1,Queue2,NewQueue)

Mode and number of proofs:

append(+queue,+queue,-queue) - one

---

length/2

Queue length.

Compilation flags:

static

Template:

length(Queue,Length)

Mode and number of proofs:

length(+heap,?integer) - zero_or_one

---

serve/3

Removes the first element of the queue for service.

Compilation flags:

static

Template:

serve(Queue,Head,NewQueue)

Mode and number of proofs:

serve(+queue,?term,-queue) - zero_or_one

---

as_list/2

Converts a queue to a list.

Compilation flags:

static

Template:

as_list(Queue,List)

Mode and number of proofs:

as_list(+queue,-list) - one

---

map/2

Applies a closure to all elements of a queue.

Compilation flags:

static

Template:

map(Closure,Queue)

Meta-predicate template:

map(1,*)

Mode and number of proofs:

map(+callable,+queue) - zero_or_one

---

map/3

Applies a closure to all elements of a queue constructing a new queue.

Compilation flags:

static

Template:

map(Closure,Queue,NewQueue)

Meta-predicate template:

map(2,*,*)

Mode and number of proofs:

map(+callable,+queue,?queue) - zero_or_one

---

Protected predicates

(none)

Private predicates

(none)

Operators

(none)

See also

queue