Re: Changes in Haskell 1.3 (Qualified names)

[peterson-john@CS.YALE.EDU]

Resent-Message-Id: <199509191800.UAA10245@animal.cs.chalmers.se>
From: peterson-john@CS.YALE.EDU
Subject: Re: Changes in Haskell 1.3 (Qualified names)
Date: Tue, 19 Sep 1995 13:57:23 -0400
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The proposed change should not break too much code.  The `.' is only
treated specially after a constructor.  This will break:

tstpatp9	= (P_cons P_write.P_cons P_read) P_empty_list

because of the P in P_write but this will be fine:

proc_emulator f	= prm_em.f

Since constructors appear relatively infrequently in compositions,
this should be a rather painless change in the syntax.

We did consider other punctuation besides `.' but almost everything is
taken or is visually unappealing; `.' has a certain amount of tradition
behind it.

   John