From: simonmar <unknown>
Date: Mon, 13 Jan 2003 11:42:16 +0000 (+0000)
Subject: [project @ 2003-01-13 11:42:16 by simonmar]
X-Git-Tag: nhc98-1-18-release~761
X-Git-Url: http://git.megacz.com/?a=commitdiff_plain;h=110117a4fd9d3ed38036386f55772ea85c0f306d;hp=110117a4fd9d3ed38036386f55772ea85c0f306d;p=haskell-directory.git

[project @ 2003-01-13 11:42:16 by simonmar]
UArrays should always be initialized with known elements, otherwise we
can lose referential transparency:

Prelude> :m + Data.Array.Unboxed
Prelude Data.Array.Unboxed> let f () = array (1, 5) [] :: UArray Int Int
Prelude Data.Array.Unboxed> f () == f ()
False

Noticed-by: Tomasz Zielonka <t.zielonka@students.mimuw.edu.pl>

MERGE TO STABLE
---