Hi there, On Thu, Jul 22, 2010 at 11:26 AM, Lubomir Bourdev <lbourdev@adobe.com> wrote:
Hi Fabien,
Notice that, even after Christian's changes, ChannelValue::base_channel_t will not always be available because ChannelValue could be a built-in type.
True. But, is that the reason why this typedef never was added to scoped_channel_value or is it that no one thought that this typedef would be useful? I always wonder which it is when I use a c++ lib.
So if you want to extract this, you will have to special-case scoped_channel_value anyway. So in this case you don't need a typedef inside. You can just define a specialization like this:
Template <typename ChannelValue> Struct base_channel_value { typedef ChannelValue type; };
Template <typename ChannelValue, typename MinV, typename MaxV> Struct base_channel_value<scoped_channel_value<ChannelValue, MinV, MaxV> > { typedef ChannelValue type; };
I really have to write that one down. I keep on forgetting this trick. Regards, Christian