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Use simpler recursion.

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This commit is contained in:
Louis Dionne
2014-05-23 15:28:05 -04:00
parent 9d88d63133
commit d59b31d184
4 changed files with 10 additions and 9 deletions
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2
include/boost/hana/detail/comparable_from_iterable.hpp
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@@ -29,7 +29,7 @@ namespace boost { namespace hana { namespace detail {
},
[](auto xs, auto ys) {
return equal(head(xs), head(ys)) &&
equal(tail(xs), tail(ys));
equal_impl(tail(xs), tail(ys));
}
)(xs, ys);
}

6
include/boost/hana/detail/foldable_from_iterable.hpp
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@@ -26,7 +26,7 @@ namespace boost { namespace hana { namespace detail {
static constexpr auto foldl_impl(F f, State s, Iterable xs) {
return if_(is_empty(xs),
always(s),
[=](auto xs) { return foldl(f, f(s, head(xs)), tail(xs)); }
[=](auto xs) { return foldl_impl(f, f(s, head(xs)), tail(xs)); }
)(xs);
}
@@ -38,7 +38,7 @@ namespace boost { namespace hana { namespace detail {
static constexpr auto foldr1_impl(F f, Iterable xs) {
return if_(is_empty(tail(xs)),
head,
[=](auto xs) { return f(head(xs), foldr1(f, tail(xs))); }
[=](auto xs) { return f(head(xs), foldr1_impl(f, tail(xs))); }
)(xs);
}
@@ -46,7 +46,7 @@ namespace boost { namespace hana { namespace detail {
static constexpr auto foldr_impl(F f, State s, Iterable xs) {
return if_(is_empty(xs),
always(s),
[=](auto xs) { return f(head(xs), foldr(f, s, tail(xs))); }
[=](auto xs) { return f(head(xs), foldr_impl(f, s, tail(xs))); }
)(xs);
}
};

10
include/boost/hana/iterable.hpp
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@@ -85,7 +85,7 @@ namespace boost { namespace hana {
static constexpr auto at_impl(Index n, Iterable_ iterable) {
return if_(n == size_t<0>,
[](auto n, auto it) { return head(it); },
[](auto n, auto it) { return at(n - size_t<1>, tail(it)); }
[](auto n, auto it) { return at_impl(n - size_t<1>, tail(it)); }
)(n, iterable);
}
@@ -93,7 +93,7 @@ namespace boost { namespace hana {
static constexpr auto last_impl(Iterable_ iterable) {
return if_(is_empty(tail(iterable)),
head,
compose(last, tail)
[](auto it) { return last_impl(tail(it)); }
)(iterable);
}
@@ -101,7 +101,7 @@ namespace boost { namespace hana {
static constexpr auto length_impl(Iterable_ iterable) {
return if_(is_empty(iterable),
always(size_t<0>),
[](auto it) { return size_t<1> + length(tail(it)); }
[](auto it) { return size_t<1> + length_impl(tail(it)); }
)(iterable);
}
@@ -109,7 +109,7 @@ namespace boost { namespace hana {
static constexpr auto drop_impl(N n, Iterable_ iterable) {
return if_(n == size_t<0> || is_empty(iterable),
always(iterable),
[](auto n, auto it) { return drop(n - size_t<1>, tail(it)); }
[](auto n, auto it) { return drop_impl(n - size_t<1>, tail(it)); }
)(n, iterable);
}
@@ -119,7 +119,7 @@ namespace boost { namespace hana {
return if_(is_empty(iterable),
always(false_),
[](auto pred, auto it) {
return pred(head(it)) || any(pred, tail(it));
return pred(head(it)) || any_impl(pred, tail(it));
}
)(pred, iterable);
}

1
include/boost/hana/std_integer_sequence.hpp
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@@ -20,6 +20,7 @@
#include <boost/hana/integral.hpp>
#include <boost/hana/iterable.hpp>
#include <type_traits>
#include <utility>