TFL/utils.sig
author wenzelm
Thu, 16 Oct 1997 15:33:06 +0200
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(*  Title:      TFL/utils
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    ID:         $Id$
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    Author:     Konrad Slind, Cambridge University Computer Laboratory
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    Copyright   1997  University of Cambridge
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Basic utilities
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*)
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signature Utils_sig =
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sig
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  exception ERR of {module:string,func:string, mesg:string}
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  val can   : ('a -> 'b) -> 'a -> bool
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  val holds : ('a -> bool) -> 'a -> bool
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  val C : ('a -> 'b -> 'c) -> 'b -> 'a -> 'c
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  val itlist : ('a -> 'b -> 'b) -> 'a list -> 'b -> 'b
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  val rev_itlist : ('a -> 'b -> 'b) -> 'a list -> 'b -> 'b
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  val end_itlist : ('a -> 'a -> 'a) -> 'a list -> 'a
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  val itlist2 :('a -> 'b -> 'c -> 'c) -> 'a list -> 'b list -> 'c -> 'c
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  val pluck : ('a -> bool) -> 'a list -> 'a * 'a list
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  val zip3 : 'a list -> 'b list -> 'c list -> ('a*'b*'c) list
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  val take  : ('a -> 'b) -> int * 'a list -> 'b list
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  val sort  : ('a -> 'a -> bool) -> 'a list -> 'a list
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end;
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