From cppreference.com
boolempty()constnoexcept;(since C++23)Checks if the stacktrace has no stacktrace entries.
Parameters
(none)
Return value
true if the stacktrace is empty, false otherwise.
Complexity
Constant.
Example
Run this code
#include<stacktrace>#include<iostream>intmain(){std::cout<<std::boolalpha;std::stacktracebktr;std::cout<<"Initially, bktr.empty(): "<<bktr.empty()<<'\n';bktr=std::stacktrace::current();std::cout<<"After getting entries, bktr.empty(): "<<bktr.empty()<<'\n';}Possible output:
Initially, bktr.empty(): true After getting entries, bktr.empty(): false See also
returns the number of stacktrace entries
(public member function)