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a file system to store APL variables outside of the APL environment; STSC continued to make enhancements to the interpreter, notably improving the performance of many of the primitive functions. In 1985, Dan Dyer of STSC and Ian Sharp of I. P. Sharp Associates jointly received the Kenneth E. Iverson Award for Outstanding Contribution to APL.
First introduced for use at IBM in 1966, the APL\360 [21] [22] [23] system was a multi-user interpreter. The ability to programmatically communicate with the operating system for information and setting interpreter system variables was done through special privileged "I-beam" functions, using both monadic and dyadic operations. [24]
Before Unicode, APL interpreters were supplied with fonts in which APL characters were mapped to less commonly used positions in the ASCII character sets, usually in the upper 128 code points. These mappings (and their national variations) were sometimes unique to each APL vendor's interpreter, which made the display of APL programs on the Web ...
I. P. Sharp Associates (IPSA) was a major Canadian computer time-sharing, consulting and services firm of the 1970s and 1980s.IPSA is well known for its work on the programming language APL, an early packet switching computer network named IPSANET, and a powerful mainframe computer-based email system named 666 Box, stylized as 666 BOX.
Two such programs were included: a slightly modified version of APLSV, IBM's APL interpreter for its System/370 mainframes, and the BASIC interpreter used on IBM's System/3 minicomputer. Consequently, the 5100's microcode was written to emulate most of the functionality of both a System/370 and a System/3.
As of 2010, Unicode allows APL to be stored in text files, published in print and on the web, and shared through email and instant messaging. Entering APL characters still requires the use of either a specific input method editor or keyboard mapping, or of a specific touch interface. APL keyboard mappings are available for free for the most ...
He helped develop the International Organization for Standardization (ISO) APL standard, then joined IBM efforts to port Berkeley Software Distribution (BSD) Unix onto IBM platforms. He worked on compilers for the programming language C , floating-point arithmetic standardization, and radix conversion, until retiring in 1992.
In 1966 he, Larry Breed and Richard Lathwell began work on the APL\360 interpreter. [7] [8] Lastly, APL\360 owes much of its superior time-sharing performance to Roger D. Moore, of I.P. Sharp Associates, Toronto, who was principally responsible for the supervisor. Its design has not been described to the extent it deserves. [9]