# std::basic_stacktrace<Allocator>::empty

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< cpp‎ | utility‎ | basic stacktrace

[[nodiscard]] bool empty() const noexcept; |  | (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>

    int main()
    {
        std::cout << std::boolalpha;
        std::stacktrace bktr;
        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

size (C++23) | returns the number of stacktrace entries (public member function)

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