# operator==, operator<=>(std::stacktrace_entry)

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< cpp‎ | utility‎ | stacktrace entry

friend constexpr bool operator==( const stacktrace_entry& lhs, const stacktrace_entry& rhs ) noexcept; | (1) | (since C++23)
friend constexpr std::strong_ordering operator<=>( const stacktrace_entry& lhs, const stacktrace_entry& rhs ) noexcept; | (2) | (since C++23)

1) Compares `lhs` and `rhs` for equality. Two `stacktrace_entry` values are equal if and only if they represent the same stacktrace entry, or both of them are empty.
2) Gets the relative order between `lhs` and `rhs` in the unspecified strict total order over all `stacktrace_entry` values which is consistent with the equality relation established by `operator==`.

These functions are not visible to ordinary unqualified or qualified lookup, and can only be found by argument-dependent lookup when `std::stacktrace_entry` is an associated class of the arguments.

The `<`, `<=`, `>`, `>=`, and `!=` operators are synthesized from operator<=> and operator== respectively.

### Parameters

lhs, rhs | - | `stacktrace_entry` values to compare

### Return value

1) true if two `lhs` and `rhs` compare equal, false otherwise.
2) std::strong_ordering::equal if `lhs` and `rhs` compare equal.
Otherwise, std::strong_ordering::less if `lhs` is ordered before `rhs` in the strict total order.
Otherwise, std::strong_ordering::greater (in which case `rhs` is ordered before `lhs` in the strict total order).

### Example

| This section is incomplete Reason: no example

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