Module Stdlib.Queue

Contents

Instructions: Use this module in your project

In the IDE (CLion, Visual Studio Code, Xcode, etc.) you use for your DkSDK project:

  1. Add the following to your project's dependencies/CMakeLists.txt:

    Copy
    DkSDKProject_DeclareAvailable(ocaml
        CONSTRAINT "= 4.14.0"
        FINDLIBS str unix runtime_events threads dynlink)
    DkSDKProject_MakeAvailable(ocaml)
  2. Add the Findlib::ocaml library to any desired targets in src/*/CMakeLists.txt:

    Copy
    target_link_libraries(YourPackage_YourLibraryName
         # ... existing libraries, if any ...
         Findlib::ocaml)
  3. Click your IDE's Build button

Not using DkSDK?

FIRST, do one or all of the following:

  1. Run:

    Copy
    opam install ocaml.4.14.0
  2. Edit your dune-project and add:

    Copy
    (package
      (name YourExistingPackage)
      (depends
      ; ... existing dependenices ...
      (ocaml (>= 4.14.0))))

    Then run:

    Copy
    dune build *.opam # if this fails, run: dune build
  3. Edit your <package>.opam file and add:

    Copy
    depends: [
      # ... existing dependencies ...
      "ocaml" {>= "4.14.0"}
    ]

    Then run:

    Copy
    opam install . --deps-only

FINALLY, add the library to any desired (library)and/or (executable) targets in your **/dune files:

Copy
(library
  (name YourLibrary)
  ; ... existing library options ...
  (libraries
    ; ... existing libraries ...
    ))

(executable
  (name YourExecutable)
  ; ... existing executable options ...
  (libraries
    ; ... existing libraries ...
    ))
type ``!'a t

The type of queues containing elements of type 'a.

exception Empty

Raised when Queue.take or Queue.peek is applied to an empty queue.

valcreate : ``unit-> 'a t

Return a new queue, initially empty.

valadd :'a -> 'a t -> unit

add x q adds the element x at the end of the queue q.

valpush :'a -> 'a t -> unit

push is a synonym for add.

valtake :'a t -> 'a

take q removes and returns the first element in queue q, or raises Empty if the queue is empty.

valtake_opt :'a t -> 'a option

take_opt q removes and returns the first element in queue q, or returns None if the queue is empty.

  • since 4.08
valpop :'a t -> 'a

pop is a synonym for take.

valpeek :'a t -> 'a

peek q returns the first element in queue q, without removing it from the queue, or raises Empty if the queue is empty.

valpeek_opt :'a t -> 'a option

peek_opt q returns the first element in queue q, without removing it from the queue, or returns None if the queue is empty.

  • since 4.08
valtop :'a t -> 'a

top is a synonym for peek.

valclear :'a t -> unit

Discard all elements from a queue.

valcopy :'a t -> 'a t

Return a copy of the given queue.

valis_empty :'a t -> bool

Return true if the given queue is empty, false otherwise.

vallength :'a t -> int

Return the number of elements in a queue.

val iter : ``('a ->unit)``-> 'a t -> unit

iter f q applies f in turn to all elements of q, from the least recently entered to the most recently entered. The queue itself is unchanged.

val fold : ``('b -> 'a -> 'b)`` -> 'b -> 'a t -> 'b

fold f accu q is equivalent to List.fold_left f accu l, where l is the list of q's elements. The queue remains unchanged.

valtransfer :'a t -> 'a t -> unit

transfer q1 q2 adds all of q1's elements at the end of the queue q2, then clears q1. It is equivalent to the sequence iter (fun x -> add x q2) q1; clear q1, but runs in constant time.

Iterators

valto_seq :'a t -> 'a Seq.t

Iterate on the queue, in front-to-back order. The behavior is not specified if the queue is modified during the iteration.

  • since 4.07
valadd_seq :'a t -> 'a Seq.t -> unit

Add the elements from a sequence to the end of the queue.

  • since 4.07
valof_seq :'a Seq.t -> 'a t

Create a queue from a sequence.

  • since 4.07

More from the DkSDK Book

    1. DkSDK
      1. Package capnp
        1. Module Capnp
            1. Module type MessageSig.MESSAGE
            1. Module type MessageSig.S
              1. Module S.ListStorage
              1. Module S.Message
              1. Module S.Object
              1. Module S.Segment
              1. Module S.Slice
              1. Module S.StructStorage
            1. Module type MessageSig.SEGMENT
            1. Module type MessageSig.SLICE
        1. Module Capnp_unix
      1. Package cmdliner
        1. Module Cmdliner
        1. Module Cmdliner_arg
        1. Module Cmdliner_base
        1. Module Cmdliner_cline
        1. Module Cmdliner_cmd
        1. Module Cmdliner_docgen
        1. Module Cmdliner_eval
        1. Module Cmdliner_info
        1. Module Cmdliner_manpage
        1. Module Cmdliner_msg
        1. Module Cmdliner_term
        1. Module Cmdliner_term_deprecated
        1. Module Cmdliner_trie
      1. Package fmt
        1. Module Fmt
        1. Module Fmt_cli
        1. Module Fmt_tty
      1. Package logs
        1. Module Logs
          1. Module type Logs.LOG
          1. ...
        1. Module Logs_cli
        1. Module Logs_fmt
        1. Module Logs_lwt
          1. Module type Logs_lwt.LOG
        1. Module Logs_threaded
      1. Package lwt
        1. Module Lwt
        1. Module Lwt_bytes
        1. Module Lwt_condition
        1. Module Lwt_config
        1. Module Lwt_engine
        1. Module Lwt_features
        1. Module Lwt_fmt
        1. Module Lwt_gc
        1. Module Lwt_io
            1. Module type Lwt_io.NumberIO
        1. Module Lwt_list
        1. Module Lwt_main
            1. Module type Lwt_main.Hooks
        1. Module Lwt_mutex
        1. Module Lwt_mvar
        1. Module Lwt_pool
        1. Module Lwt_pqueue
            1. Module type Lwt_pqueue.OrderedType
            1. Module type Lwt_pqueue.S
        1. Module Lwt_preemptive
        1. Module Lwt_process
        1. Module Lwt_result
        1. Module Lwt_seq
        1. Module Lwt_sequence
        1. Module Lwt_stream
        1. Module Lwt_switch
        1. Module Lwt_sys
        1. Module Lwt_throttle
            1. Module type Lwt_throttle.S
        1. Module Lwt_timeout
        1. Module Lwt_unix
      1. Package mtime
        1. Module Mtime
        1. Module Mtime_clock
      1. Package ocaml
        1. Module Bigarray
        1. Module Condition
        1. Module Dynlink
        1. Module Event
        1. Module Mutex
        1. Module Profiling
        1. Module Semaphore
        1. Module Stdlib
          1. ...
          1. Module Stdlib.Queue
        1. Module Str
        1. Module Thread
        1. Module ThreadUnix
        1. Module Topdirs
        1. Module Unix
        1. Module UnixLabels
      1. Package
      1. Package result
        1. Module Result
      1. Package stdint
        1. Module Stdint
            1. Module type Stdint.Int