std::basic_stacktrace<Allocator>::rbegin, std::basic_stacktrace<Allocator>::crbegin
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< cpp | utility | basic stacktrace
C++
Diagnostics library
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std::basic_stacktrace
| const_reverse_iterator rbegin() const noexcept; |
(1) | (since C++23) |
| const_reverse_iterator crbegin() const noexcept; |
(2) | (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().
Contents |
[edit] Parameters
(none)
[edit] Return value
Reverse iterator to the first entry.
[edit] Complexity
Constant.
[edit] Example
Run this code
#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"; }
Possible output:
0x0000000000402A29 in ./prog.exe __libc_start_main in /lib/x86_64-linux-gnu/libc.so.6 0x0000000000402BA5 in ./prog.exe stacktrace 'empty_trace' is indeed empty.
[edit] See also
| returns a reverse iterator to the end (public member function) |
