2 Apr
2012
2 Apr
'12
8:47 a.m.
On 1 Apr 2012, at 22:07, Nathan Ridge wrote:
From a pure meta-programming perspective, I guess the only real addition is variadic templates. However, there is the problem that they're fairly limited and that one may not expand them as the arguments of a non-variadic template.
I thought that was allowed. At least, GCC supports it since 4.7, and its error message for it in 4.6 was
"sorry, unimplemented: cannot expand 'Args ...' into a fixed-length argument list"
which suggests the feature is not an extension.
There is a workaround for this, redirect through another layer of templates template<template <typename...> T, typename... Args> struct Join { typedef T<Args...> type; }; Chris