std::basic_stacktrace<Allocator>::begin, std::basic_stacktrace<Allocator>::cbegin
From cppreference.com
< cpp | utility | basic stacktrace
const_iterator begin() constnoexcept; | (1) | (since C++23) |
const_iterator cbegin()constnoexcept; | (2) | (since C++23) |
Returns an iterator to the first entry of the basic_stacktrace.
If the basic_stacktrace is empty, the returned iterator is equal to end().
Contents |
[edit]Parameters
(none)
[edit]Return value
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.begin(), trace.end(), [](constauto& f){std::cout<< f <<'\n';}); if(empty_trace.begin()== empty_trace.end())std::cout<<"stacktrace 'empty_trace' is indeed empty.\n";}
Possible output:
0x0000000000402BA8 in ./prog.exe __libc_start_main in /lib/x86_64-linux-gnu/libc.so.6 0x0000000000402A29 in ./prog.exe stacktrace 'empty_trace' is indeed empty.
[edit]See also
| returns an iterator to the end (public member function) |
