From: dewar@merv.cs.nyu.edu (Robert Dewar)
Subject: Re: renaming Interfaces.Java.Ada_To_Java_String to the + operator
Date: 1998/01/20
Date: 1998-01-20T00:00:00+00:00 [thread overview]
Message-ID: <dewar.885328875@merv> (raw)
In-Reply-To: En3Cxz.7HD@world.std.com
<<is syntactically illegal, without looking it up (and without feeding it
to a compiler)? GNAT complains "missing operand" pointing to the second
plus, which isn't the most helpful error message I've ever seen.
Rational's compiler complains about a missing expression before the
second plus, which is no better.
>>
[This was for the illegal use of unary plus and minus as in
x & + b
it is always hard to know what might be the "most helpful" message, since
of course this involves telephathy. I wonder if we changed this to
"unary plus[minus] requires parenthesization in this context"
or somesuch, would this be an overall improvement, maybe, it is a tossup.
The problem is that one or the other is correct but it is hard to tell
which.
Yes, if you got fancy you could use type information to tell, but that's
reallyu *awfully* heavy in implementation complexity.
next prev parent reply other threads:[~1998-01-20 0:00 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-01-11 0:00 renaming Interfaces.Java.Ada_To_Java_String to the + operator Terry J. Westley
1998-01-10 0:00 ` Robert Dewar
1998-01-10 0:00 ` Matthew Heaney
1998-01-13 0:00 ` Tom Moran
1998-01-13 0:00 ` Stephen Leake
1998-01-13 0:00 ` Nick Roberts
1998-01-13 0:00 ` Stephen Leake
1998-01-13 0:00 ` Robert Dewar
[not found] ` <En3Cxz.7HD@world.std.com>
1998-01-20 0:00 ` Robert Dewar [this message]
1998-01-21 0:00 ` Stephen Leake
1998-01-22 0:00 ` Robert Dewar
1998-01-22 0:00 ` Anonymous
[not found] ` <dewar.885498969@merv>
1998-01-23 0:00 ` Tom Moran
1998-01-23 0:00 ` Geert Bosch
1998-01-23 0:00 ` Anonymous
1998-01-24 0:00 ` Tucker Taft
1998-01-11 0:00 ` Chris Morgan
1998-01-11 0:00 ` Robert Dewar
1998-01-11 0:00 ` Chris Morgan
1998-01-11 0:00 ` Robert Dewar
1998-01-11 0:00 ` Chris Morgan
1998-01-11 0:00 ` Robert Dewar
1998-01-11 0:00 ` Nick Roberts
1998-01-11 0:00 ` Brian Rogoff
1998-01-13 0:00 ` Terry J. Westley
1998-01-14 0:00 ` Robert Dewar
1998-01-15 0:00 ` Nick Roberts
1998-01-15 0:00 ` Robert Dewar
1998-01-16 0:00 ` Michael F Brenner
1998-01-16 0:00 ` Robert Dewar
1998-01-16 0:00 ` Nick Roberts
1998-01-16 0:00 ` Robert Dewar
1998-01-17 0:00 ` miniscences Nick Roberts
1998-01-17 0:00 ` miniscences Robert Dewar
1998-01-19 0:00 ` renaming Interfaces.Java.Ada_To_Java_String to the + operator Anonymous
1998-01-25 0:00 ` Matthew Heaney
1998-01-11 0:00 ` Robert Dewar
1998-01-14 0:00 ` Anonymous
1998-01-14 0:00 ` Robert Dewar
1998-01-12 0:00 ` Tucker Taft
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