[ 2022-10-12; Reflector poll ]
Set priority to 3 after reflector poll.
"Could introduce an as_lvalue lambda (like
auto as_lvalue = []<class T>(T&& x) -> T& { return (T&)x; };) and use it throughout."
This wording is relative to N4917.
Modify [range.join.iterator] as indicated:
constexpr iterator& operator--()
requires ref-is-glvalue && bidirectional_range<Base> &&
bidirectional_range<range_reference_t<Base>> &&
common_range<range_reference_t<Base>>;
-13- Effects: Equivalent to:
if (outer_ == ranges::end(parent_->base_)) {
auto&& inner = *--outer_;
inner_ = ranges::end(inner*--outer_);
}
while (trueinner_ == ranges::begin(*outer_)) {
if (auto&& tmp = *outer_; inner_ == ranges::begin(tmp)) {
auto&& inner = *--outer_;
inner_ = ranges::end(inner*--outer_);
} else {
break;
}
}
--inner_;
return *this;