Defined in matrix.hpp.
This is a stateless struct with a single call operator of signature: bool operator()() const noexcept which returns true; representing the multiplicative identity of the boolean semiring. 
| Public Member Functions | |
| constexpr bool | operator() () const noexcept | 
| Call operator returning the multiplication identity trueof the boolean semiring. | |
| 
 | inlineconstexprnoexcept | 
Call operator returning the multiplication identity true of the boolean semiring.
true.noexcept and is guaranteed never to throw.