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Subject: Re: [Boost-users] Testing that a particular operator is not alllowed
From: joel falcou (joel.falcou_at_[hidden])
Date: 2010-07-09 00:37:42

Edward Diener wrote:
> Is there any way to test at compile time, using a Boost construct,
> that a particular operator is not allowable for a given type, other
> than simply compile the code and have the compiler generate an error
> message when trying to use an operator on an object of that type ?
> I am writing some tests for an MPL library on which I am working where
> I want to make sure that a given operator for my template class
> instantiation object will fail to compile, but I would like to do this
> in such a way that I can generate a compile time message for the
> failure rather than an actual compiler error. I suspect this is not
> possible but I thought I would ask anyway.
Frederic Bron wrote an extensive list of traits meta-function for that.
It was in the sandbox but I don't remember if it's in trunk atm.

Here's the link to the initial topic with a proper idea of implementation:

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