std::basic_stacktrace<Allocator>::rbegin, std::basic_stacktrace<Allocator>::crbegin

Since C++23

Returns a reverse iterator to the first entry of the reversed basic_stacktrace. It corresponds to the last entry of the original basic_stacktrace. If the basic_stacktrace is empty, the returned iterator is equal to rend().

# Declarations

const_reverse_iterator rbegin() const noexcept;

(since C++23)

const_reverse_iterator crbegin() const noexcept;

(since C++23)

# Return value

Reverse iterator to the first entry.

# Example

#include <algorithm>
#include <iostream>
#include <stacktrace>
 
int main()
{
    auto trace       = std::stacktrace::current();
    auto empty_trace = std::stacktrace{};
 
    // Print stacktrace.
    std::for_each(trace.rbegin(), trace.rend(),
                  [](const auto& f) { std::cout << f << '\n'; });
 
    if (empty_trace.rbegin() == empty_trace.rend())
        std::cout << "stacktrace 'empty_trace' is indeed empty.\n";
}

# See also

rendcrend