2 ||M|| This file is part of HELM, an Hypertextual, Electronic
3 ||A|| Library of Mathematics, developed at the Computer Science
4 ||T|| Department, University of Bologna, Italy.
6 ||T|| HELM is free software; you can redistribute it and/or
7 ||A|| modify it under the terms of the GNU General Public License
8 \ / version 2 or (at your option) any later version.
9 \ / This software is distributed as is, NO WARRANTY.
10 V_______________________________________________________________ *)
17 let env = H.create hsize
20 (* Internal functions *******************************************************)
22 (* Interface functions ******************************************************)
25 let _, uri, b = obj in
26 let obj = !entry, uri, b in
27 incr entry; H.add env uri obj; f obj
29 let get_obj err f uri =
30 try f (H.find env uri) with Not_found -> err ()