[ConceptCheck] Same type concept
I'd like a concept check to check for two types being the same type. I can see how to write such a concept, but this is such an obvious requirement that either there should be one already, or there's some blindingly obvious reason why you never need one, a reason that escapes me. A little guidance would be appreciated. Thanks, Rob.
On 8/24/2014 6:08 PM, Robert Jones wrote:
I'd like a concept check to check for two types being the same type.
I can see how to write such a concept, but this is such an obvious requirement that either there should be one already, or there's some blindingly obvious reason why you never need one, a reason that escapes me.
A little guidance would be appreciated.
Look at boost::is_same in the type traits library. Also modern C++11 has std::is_same.
Thanks Edward.... at risk of looking even more foolish, I've looked
at that, and other traits, but think I'm missing something obvious in
expressing a type trait as a concept!
- Rob.
On 24 August 2014 23:44, Edward Diener
On 8/24/2014 6:08 PM, Robert Jones wrote:
I'd like a concept check to check for two types being the same type.
I can see how to write such a concept, but this is such an obvious requirement that either there should be one already, or there's some blindingly obvious reason why you never need one, a reason that escapes me.
A little guidance would be appreciated.
Look at boost::is_same in the type traits library. Also modern C++11 has std::is_same.
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the obvious thing you're missing is that a "Concept" is just a glorified name
for some static asserts.
So you can get what you want by using
template
participants (3)
-
Edward Diener -
Robert Jones -
Robert Ramey