Nantucket’s Aspen project later matured into the Windows native-code Visual Objects compiler.Īfter “swallow” Nantucket at 1992, CA published a few releases of Clipper Compiler, lastly 5.3a at May 20, 1997.
GrafX Software licensed CA-Clipper in 2002 from CA for ongoing marketing and distribution.Īs the product matured, it remained a DOS tool for many years, but added elements of the C programming language and Pascal programming language, as well as OOP, and the code-block data-type (hybridizing the concepts of dBase macros, or string-evaluation, and function pointers), to become far more powerful than the original. Clipper was created by Nantucket Corporation led by Barry ReBell (political) and Brian Russell (technical), and later sold to Computer Associates. obj files) which gave the impression that it was compiled to native code. As a technical marketing ploy, the p-code was wrapped into object code (linkable. p-code is considerably faster, but still not as fast as the machine code generated by native compilers. Compiling dBASE code changes it from interpreted code, which must be interpreted every time each line of code is executed, to p-code, which uses a Virtual Machine to process the compiled p-code. Although it is a powerful general-purpose programming language, it was primarily used to construct database/business programs.Ĭlipper was originally released in 1985 as a compiler for dBASE III, a very popular database language at the time. As a computer software term, the word “Clipper” has two meaning :Īs a computer programming language that is used to build software programs that originally operated primarily under DOS.
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