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(* Forum.Score -- Upvotes and downvotes
Copyright (C) 2013  Benjamin Barenblat <bbaren@mit.edu>

This file is a part of 6.947.

6.947 is is free software: you can redistribute it and/or modify it under the
terms of the GNU Affero General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option) any
later version.

6.947 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 Affero General Public License for more
details.

You should have received a copy of the GNU Affero General Public License along
with 6.947.  If not, see <http://www.gnu.org/licenses/>. *)

type score

val insightful : score
val undecided : score
val inane : score


(********************************* Instances *********************************)

val eq_score : eq score

val show_score : show score

val sql_score : sql_injectable score
val sql_summable_score : sql_summable score
val nullify_score : nullify score (option score)


(********************************* Updating **********************************)

val update : score -> score -> score


(******************************** Conversion *********************************)

val toInt : score -> int


(****************************** Pretty-printing ******************************)

val withUnits : score -> string -> string