Re: [Boost-users] [mpl] trouble with conditionals

OK, your correction works, but I don't understand why. I thought that omitting the typename ... ::type syntax just creates a null-ary metafunction. For example, pair, at > seems to me like it would produce not a pair consisting of a char and an int_, but a pair consisting of a char and a null-ary metafunction which, when applied, produces an int_. Am I missing something?