![]() ![]() USE Customer SHARED 1, 0 SAY "CustNum" GET Customer->CustNum PICT "999999" VALID Customer->CustNum > 3, 0 SAY "Contact" GET Customer->Contact VALID 4, 0 SAY "Address" GET Customer->AddressREADįrom Nantucket Corporation the "seasonal versions", billed as "dBase compilers" The Clipper Usenet newsgroups are (Ĭlipper (programming language) - Wikipedia, the free encyclopedia (programming_language) These newer implementations all strive for full compatibility with the standard dBase/xBase syntax,while also offering OOP approaches and target-based syntax such as SQLExecute(). Many of the current implementations are portable (DOS, Windows, Linux (32- and 64-bit), Unix (32- and64-bit), and Mac OS X), supporting many language extensions (), and have greatly extended runtime libraries, as well as variousReplaceable Database Drivers (RDD) supporting many popular database formats, like DBF, DBTNTX,DBFCDX (FoxPro, Apollo, Comix, and Advantage Database Server), MachSix (SIx Driver and Apollo), SQL,and more. The Clipper language is being actively implemented and extended by multiple organizations/vendors, likeXBase++ from Alaska Software and FlagShip, as well as free (GPL-licensed) projects like Harbour andxHarbour. Nantucket's Aspen project later matured into the Windows native-code Visual Objects compiler. GrafX Software licensed CA-Clipper in2002 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 programminglanguage and Pascal programming language, as well as OOP, and the code-block data-type (hybridizing theconcepts of dBase macros, or string-evaluation, and function pointers), to become far more powerful than theoriginal. Clipper was created by Nantucket Corporation led by Barry ReBell (management)and Brian Russell (technical), and later sold to Computer Associates. obj files) which gave the impression that itwas compiled to native code. As a technicalmarketing ploy, the p-code was wrapped into object code (linkable. p-code isconsiderably 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 lineof code is executed, to p-code, which uses a Virtual Machine to process the compiled p-code. Although it is a powerful general-purposeprogramming language, it was primarily used to createdatabase/business programs.ġ History2 Programming in Clipper3 Version history4 External linksĬlipper was originally created in 1985 as a compiler for dBASE III, a very popular database language at thetime. ![]() Stable release CA Clipper 5.3b (May 20, 1997)Ĭlipper is a computer programming language that is used tocreate software programs that originally operated primarilyunder DOS. ![]()
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