explicit type conversion การใช้

In a cluster, the explicit type conversions " up " and " down " change between the abstract type and the representation.
In Eiffel, the setup for type conversion is included in the class code, but then appears to happen as automatically as explicit type conversion in client code.
Explicit type conversions are either indicated by writing additional code ( e . g . adding type identifiers or calling built-in routines ) or by coding conversion routines for the compiler to use when it otherwise would halt with a type mismatch.