316 search results - page 1 / 64 » Subtyping Union Types |
CSL
2004
Springer
14 years 4 months ago
2004
Springer
Subtyping rules can be fairly complex for union types, due to interactions with other types, such as function types. Furthermore, these interactions turn out to depend on the calc...
SAC
2006
ACM
14 years 4 months ago
2006
ACM
We propose union types for statically typed class-based objectoriented languages as a means to enhance the flexibility of subtyping. As its name suggests, a union type can be con...
ENTCS
2002
13 years 10 months ago
2002
We compare Meyer and Routley's minimal relevant logic B+ with the recent semanticsbased approach to subtyping introduced by Frisch, Castagna and Benzaken in the definition of...
DBPL
1999
Springer
14 years 3 months ago
1999
Springer
Semistructured databases are treated as dynamically typed: they come equipped with no independent schema or type system to constrain the data. Query languages that are designed fo...
SIGSOFT
2005
ACM
14 years 11 months ago
2005
ACM
Previous work has proven typestates to be useful for modeling protocols in object-oriented languages. We build on this work by addressing substitutability of subtypes as well as i...