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Add value list support to mp_fill. Refs #53.

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Peter Dimov
2023-05-16 18:34:16 +03:00
parent 3f8a53ac89
commit 799c2e6079
3 changed files with 54 additions and 1 deletions
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include/boost/mp11/algorithm.hpp
+13 -1
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@@ -199,7 +199,10 @@ template<class Q, class... L> using mp_filter_q = typename detail::mp_filter_imp
namespace detail
{
template<class L, class V> struct mp_fill_impl;
template<class L, class V> struct mp_fill_impl
{
// An error "no type named 'type'" here means that the L argument of mp_fill is not a list
};
template<template<class...> class L, class... T, class V> struct mp_fill_impl<L<T...>, V>
{
@@ -216,6 +219,15 @@ template<template<class...> class L, class... T, class V> struct mp_fill_impl<L<
#endif
};
#if defined(BOOST_MP11_HAS_TEMPLATE_AUTO)
template<template<auto...> class L, auto... A, class V> struct mp_fill_impl<L<A...>, V>
{
using type = L<((void)A, V::value)...>;
};
#endif
} // namespace detail
template<class L, class V> using mp_fill = typename detail::mp_fill_impl<L, V>::type;