author | huffman |
Thu, 26 May 2005 02:23:27 +0200 | |
changeset 16081 | 81a4b4a245b0 |
parent 14981 | e73f8140af78 |
child 16712 | c7d1c79d921c |
permissions | -rw-r--r-- |
(* Title: Pure/General/buffer.ML ID: $Id$ Author: Markus Wenzel, TU Muenchen Simple string buffers. *) signature BUFFER = sig type T val empty: T val add: string -> T -> T val content: T -> string val write: Path.T -> T -> unit end; structure Buffer: BUFFER = struct datatype T = Buffer of string list; val empty = Buffer []; fun add x (Buffer xs) = Buffer (x :: xs); fun content (Buffer xs) = implode (rev xs); fun write path buffer = File.write path (content buffer); end;