Hi,
using MSVC 2019 in debug mode I get an exception "cannot compare
incompatible string_view iterators for equality". Using release mode and
Clang/G++ all went fine as expected.
- Boost: 1.76
- Visual Studio 2019 16.10.3 in C++17 mode
How can it changed to be "portable" for all compiler? What's the reason
behind? Using range.data() + size or data.front() + size for e.g. end
iterator didn't compile.
Thanks in advance!
Olaf
#include
#include
#include
#include
#include
#include <iostream>
template <typename RangeType>
static auto filter_range(RangeType const& range)
{
struct separator_predicate {
bool operator()(char x) { return '_' != x; }
};
// FixMe: MSVC 2019 with '_CONTAINER_DEBUG_LEVEL > 0' triggers
// assertion:
// "cannot compare incompatible string_view iterators for equality"
return boost::make_iterator_range(
boost::make_filter_iterator(
separator_predicate{}, range.begin(), range.end()),
boost::make_filter_iterator(
separator_predicate{}, range.end()));
}
using iterator_type = std::basic_string_view<char>::const_iterator;
using string_span = boost::iterator_range;
int main()
{
// input
std::string_view const sv = "Hello_World";
// algorithm get boost::iterator_range, aka string_span
auto const range = string_span(sv);
// here we are
auto const range_f = filter_range(range);
std::cout << range_f << '\n';
}
