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(*
Title: Standard Basis Library: List Signature
Author: David Matthews
Copyright David Matthews 1999, 2005, 2016
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*)
signature LIST =
sig
datatype list = datatype list
(* G&R include the definition of list below in their "Interface". This is illegal. *)
(*datatype 'a list = nil | :: of 'a * 'a list *)
exception Empty
val null : 'a list -> bool
val length : 'a list -> int
val @ : ('a list * 'a list) -> 'a list
val concat : 'a list list -> 'a list
val revAppend : ('a list * 'a list) -> 'a list
val tabulate : (int * (int -> 'a)) -> 'a list
val hd : 'a list -> 'a
val tl : 'a list -> 'a list
val last : 'a list -> 'a
val getItem : 'a list -> ('a * 'a list) option
val nth : ('a list * int) -> 'a
val take : ('a list * int) -> 'a list
val drop : ('a list * int) -> 'a list
val rev : 'a list -> 'a list
val app : ('a -> unit) -> 'a list -> unit
val map : ('a -> 'b) -> 'a list -> 'b list
val mapPartial : ('a -> 'b option) -> 'a list -> 'b list
val find : ('a -> bool) -> 'a list -> 'a option
val filter : ('a -> bool) -> 'a list -> 'a list
val partition : ('a -> bool) -> 'a list -> ('a list * 'a list)
val foldl : (('a * 'b) -> 'b) -> 'b -> 'a list -> 'b
val foldr : (('a * 'b) -> 'b) -> 'b -> 'a list -> 'b
val exists : ('a -> bool) -> 'a list -> bool
val all : ('a -> bool) -> 'a list -> bool
val collate: ('a * 'a -> order) -> 'a list * 'a list -> order
end;
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