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From: tmoran@acm.org
Newsgroups: comp.lang.ada
Subject: Re: procedure Make_File_Gone (Name : in String);
Date: Sat, 23 Jul 2011 19:05:02 +0000 (UTC)
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Date: 2011-07-23T19:05:02+00:00
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> The postcondition of the two is the same -- the file isn't there.

  I understand a postcondition to be true just after execution of
something.  The postcondition for an execution of
Ada_Directories.Delete_File is

"(the file isn't there and a Name_Error may or may not have been raised),
or a Use_Error has been raised"

I want a routine where the postcondition is

"the file isn't there, or a Use_Error has been raised"

(In my programming a Use_Error is exceptional, but trying to ensure
that a certain file no longer exists is not all that unusual.)

I'm looking for a good name for such a routine, where "good" means
short and clear to a maintenance programmer scanning the code.  Perhaps
English doesn't have a nice way of making such an imperative->declarative
phrase.