These are chat archives for boostorg/hana
tupleclasses is MINDBLOWING. I so wish we had a language construct for those instead.
__type_pack_elementas a builtin would be really interesting for maps. something like
constexpr size_t i = __type_pack_index<T, Pack...>
index_ofthat takes a key instead of a predicate
using Value = __type_map_lookup(Key, Pairs...)
find_ifon a constexpr
meta::types. That would be neat.