TPHOL
1999
IEEE
13 years 9 months ago
1999
IEEE
The standard versions of HOL only support disjoint sums over finite families of types. This paper introduces disjoint sums over type classes containing possibly a countably infinit...
TACAS
2007
Springer
13 years 11 months ago
2007
Springer
The ad-hoc use of unions to encode disjoint sum types in C programs and the inability of C’s type system to check the safe use of these unions is a long standing source of subtle...