Covariance and contravariance: conflict without a cause
ACM Transactions on Programming Languages and Systems (TOPLAS)
Relaxed MultiJava: balancing extensibility and modular typechecking
OOPSLA '03 Proceedings of the 18th annual ACM SIGPLAN conference on Object-oriented programing, systems, languages, and applications
Reconciling software extensibility with modular program reasoning
Reconciling software extensibility with modular program reasoning
Modular typechecking for hierarchically extensible datatypes and functions
ACM Transactions on Programming Languages and Systems (TOPLAS)
Java(TM) Language Specification, The (3rd Edition) (Java (Addison-Wesley))
Java(TM) Language Specification, The (3rd Edition) (Java (Addison-Wesley))
MultiJava: Design rationale, compiler implementation, and applications
ACM Transactions on Programming Languages and Systems (TOPLAS)
Parameterized modules for classes and extensible functions
ECOOP'06 Proceedings of the 20th European conference on Object-Oriented Programming
Integrating coercion with subtyping and multiple dispatch
Proceedings of the 2008 ACM symposium on Applied computing
DLS '08 Proceedings of the 2008 symposium on Dynamic languages
Symmetric encapsulated multi-methods to abstract over application structure
Proceedings of the 2009 ACM symposium on Applied Computing
CZ: multiple inheritance without diamonds
Proceedings of the 24th ACM SIGPLAN conference on Object oriented programming systems languages and applications
Design and evaluation of C++ open multi-methods
Science of Computer Programming
Integrating coercion with subtyping and multiple dispatch
Science of Computer Programming
JavaGI: The Interaction of Type Classes with Interfaces and Inheritance
ACM Transactions on Programming Languages and Systems (TOPLAS)
Type checking modular multiple dispatch with parametric polymorphism and multiple inheritance
Proceedings of the 2011 ACM international conference on Object oriented programming systems languages and applications
COQ mechanization of featherweight fortress with multiple dispatch and multiple inheritance
CPP'11 Proceedings of the First international conference on Certified Programs and Proofs
Magda: a new language for modularity
ECOOP'12 Proceedings of the 26th European conference on Object-Oriented Programming
Abstraction over implementation structure with symmetrically encapsulated multimethods
Science of Computer Programming
Unifying functional and object-oriented programming with Scala
Communications of the ACM
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Overloaded functions and methods with multiple dispatch are useful for extending the functionality of existing classes in an object-oriented language. However, such functions introduce the possibility of ambiguous calls that cannot be resolved at run time, and modular static checking that such ambiguity does not exist has proved elusive in the presence of multiple implementation inheritance. We present a core language for defining overloaded functions and methods that supports multiple dispatch and multiple inheritance, together with a set of restrictions on these definitions that can be statically and modularly checked. We have proved that these restrictions guarantee that no undefined nor ambiguous calls occur at run time, while still permitting various kinds of overloading.