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The Roman god of doors and gateways and hence of beginnings.
Note: Janus was pictured with two faces looking in opposite directions, one young and one old. Consequently, a hypocritical person is often called “Janus-faced.”
Note: The month of January is named after Janus.
1. Distributed language with an ask/tell constraint system.
qdjanus is a Janus-to-Prolog compiler for Sicstus Prolog and jc is compiles to C.
["Janus: A Step Towards Distributed Constraint Programming", V. Saraswat
["Programming in Janus", Saraswat, Kahn, and Levy].
2. W.M. Waite, U Colorado. Intermediate language, claimed as an implementation of UNCOL. Used on CDC 6600.
["Experience with the Universal Intermediate Language Janus", B.K. Haddon et al, Soft Prac & Exp 8(5):601- 616 (Sep 1978)].