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
| Member functions | ||||
| Iterators | ||||
basic_stacktrace::rbeginbasic_stacktrace::crbegin | ||||
| Capacity | ||||
| Element access | ||||
| Modifiers | ||||
| Non-member functions | ||||
| Helper classes | ||||
const_reverse_iterator rbegin() constnoexcept; | (1) | (since C++23) |
const_reverse_iterator crbegin()constnoexcept; | (2) | (since C++23) |
Returns a reverse iterator to the first entry of the reversedbasic_stacktrace. It corresponds to the last entry of the originalbasic_stacktrace. If thebasic_stacktrace is empty, the returned iterator is equal torend().
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(),[](constauto& 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.60x0000000000402BA5 in ./prog.exestacktrace 'empty_trace' is indeed empty.
[edit]See also
| returns a reverse iterator to the end (public member function)[edit] |
