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Add mp_intersperse

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Peter Dimov
2021-03-12 04:27:50 +02:00
parent 0dea2f1a2b
commit 080c3437ed
3 changed files with 60 additions and 0 deletions
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include/boost/mp11/algorithm.hpp
+21
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@@ -1240,6 +1240,27 @@ template<class L, class Q> using mp_pairwise_fold_impl = mp_transform_q<Q, mp_po
template<class L, class Q> using mp_pairwise_fold_q = mp_eval_if<mp_empty<L>, mp_clear<L>, detail::mp_pairwise_fold_impl, L, Q>;
template<class L, template<class...> class F> using mp_pairwise_fold = mp_pairwise_fold_q<L, mp_quote<F>>;
namespace detail
{
template<class L, class S> struct mp_intersperse_impl
{
};
template<template<class...> class L, class S> struct mp_intersperse_impl<L<>, S>
{
using type = L<>;
};
template<template<class...> class L, class T1, class... T, class S> struct mp_intersperse_impl<L<T1, T...>, S>
{
using type = mp_append<L<T1>, L<S, T>...>;
};
} // namespace detail
template<class L, class S> using mp_intersperse = typename detail::mp_intersperse_impl<L, S>::type;
} // namespace mp11
} // namespace boost