| L. Nixon. A directional type checker for Prolog . Master's thesis LiTH-IDA-Ex-9602, Linkoping university, 1996. |
....the S well typing condition can also handle clauses whose body literals cannot be reordered to obtain well typing, as shown by the example programs of Sections 3 and 7. Existence of some systems that perform directional type checking is reported in the literature. In the context of our work, Nixon [36] implemented a system that allows for defining new regular types and for associating a directional type with user defined predicates. The predefined predicates have standard directional types, which can be changed by the user. The system can check the correctness of a directional type 39 with ....
L. Nixon. A directional type checker for Prolog . Master's thesis LiTH-IDA-Ex-9602, Linkoping university, 1996.
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