Re: exception specifications in the standard library

From:

David Abrahams <dave@boost-consulting.com>

Newsgroups:

comp.lang.c++.moderated

Date:

Wed, 11 Apr 2007 08:23:27 CST

Message-ID:

<87wt0jb1uk.fsf@grogan.peloton>

on Tue Apr 10 2007, Andreas Schmitt <keldorkatarn-AT-gmx.de> wrote:

David Abrahams schrieb:

I beg to differ. Every conforming implementation of C++ has
exception-safe containers, for any reasonable definition of the term
"exception-safe."

You are right of course. Sorry for the missleading use of the term
"exception-safe". A common error I find myself making time and again.
I was of course refering to the specification throw() and meant that it
is very hard to make prediction about exceptions that might be thrown by
a type that is not yet known.

So instead of making predictions, you set requirements where you need
to.

http://www.boost.org/more/generic_exception_safety.html

And I speculated that this is probably the reason why most container
functions simply do not have any exception specifications.

The paper above says otherwise.

Those do not seem to be in wide use anyway, except for the throw()
specifications.

Those aren't in wide use either.

--
Dave Abrahams
Boost Consulting
http://www.boost-consulting.com

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