- polymorphism. A
subtype is a
datatype that is
related to
another datatype (the
supertype) by some
notion of substitutability,
meaning that
program elements (typically...
- fig 2, and the code like this:
SCHEMA Family;
ENTITY Person ABSTRACT SUPERTYPE OF (ONEOF (Male, Female)); name: STRING; mother:
OPTIONAL Female; father:...
-
present in the
supertype, the
introduction of
these methods may
allow state changes in the
subtype that are not
permissible in the
supertype. The history...
- ⊤. The top type is
sometimes called also
universal type, or
universal supertype as all
other types in the type
system of
interest are
subtypes of it,...
- and a
specific instance of it (hyponym). The
hypernym is also
called a
supertype,
umbrella term, or
blanket term. The
hyponym is a
subtype of the hypernym...
- in the C++ STL. To
summarize the relations, we have hypernym-hyponym (
supertype-subtype)
relations between types (classes)
defining a
taxonomic hierarchy...
- (Generic<
Supertype>)subGeneric. This
incompatibility can be
softened by the
wildcard if ? is used as an
actual type parameter. Generic<?> is a
supertype of...
- distinction. To
summarize the relations,
there are: hyperonym–hyponym (
supertype/superclass–subtype/subclass)
relations between types (classes) defining...
- kind of
thing has more than one
superordinate others do not.
Multiple supertypes for one
subtype implies that the
subordinate has the
combined characteristics...
- type
relation is
sometimes written S <: T. Conversely, T is said to be a
supertype of S—written T :> S.
Subtype polymorphism is
usually resolved dynamically...
