Return the result of t1 <=> t2 expression if this expression is valid. Otherwise, if t1 < t2 and t2 < t1 expressions are well-formed and return boolean-testable results, use the < operator to emulate <=>. Otherwise this function is not defined and does not participate in overload resolution. Note that this is an implementation of the exposition-only callable object synth-three-way defined by the ISO C++20 Standard [expos.only.entity].
Declared in <bslalg_synththreewayutil.h>
struct Unnamed struct;| Name | Description |
|---|---|
operator() | Return the result of comparing the specified t1 and t2 using <=> if available, otherwise using <. |
| Name | Description |
|---|---|
isNoexcept | Return true if comparing t_TYPE1 and t_TYPE2 with synth-three-way is noexcept. |