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1. A DSP language. ["OPAL: A High Level Language and Environment for DSP boards on PC", J.P. Schwartz et al, Proc ICASSP-89, 1989]. 2. The language of the object-oriented database {GemStone}. ["Making Smalltalk a Database System", G. Copeland et al, Proc SIGMOD'84, ACM 1984, pp.316- 325]. 3. A simulation language with provision for {stochastic variables}. An extension of Autostat. ["C-E-I-R OPAL", D. Pilling, Internal Report, C.E.I.R. Ltd. (1963)]. 4. A language for compiler testing said to be used internally by DEC. 5. A functional programming language designed at the {Technische Universitaet Berlin} as a testbed for the development of {functional programs}. OPAL integrates concepts from Algebraic Specification and Functional Programming, which favour the (formal) development of (large) production-quality software written in a purely functional style. The core of OPAL is a strongly typed, {higher-order}, strict applicative language which belongs t スポンサード リンク
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