Q. A very {high level language} by Per Bothner based on {lazy} generalised sequences. Q has {lexical scope}, and some support for {logic programming}[?] and {constraint} programming. The language includes small subsets of {Common Lisp} and {Scheme}. Q was a test-bed for programming language ideas. Where {APL} uses {arrays} for looping, Q uses generalised sequences which may be infinite and may be stored or calculated on demand. It has {macros}, {primitives} to run programs, and an {interactive} command language. Q is implemented in {C++}, and comes with an {interpreter}, {compiler} framework, libraries, and documentation. It runs on {Linux} and {SUN-4} and should work on any 32-bit {Unix}. Latest version: 1, as of 1993-06-07. Development stopped in 1994. {Home (http://kelso.bothner.com/~per/software/#Q )}. E-mail: Per Bothner . (2000-05-22) QA. {Quality Assurance} qa. The {country code} for Qatar. (1999-01-27) QA4. Question-answering language. A procedural calculus for intuitive reasoning. A LISP-based pattern-matching language for theorem proving. "QA4, A Language for Writing Problem-Solving Programs", J.F. Rulifson et al, Proc IFIP Congress 1968. QAM. 1. {Quadrature Amplitude Modulation}. 2. {Quality Assurance Management}. Qbasic. Quick basic. A version of {BASIC} from {Microsoft}, later known as {MS-BASIC}. (1995-03-16) QBE. {Query By Example} QCA. {Quantum-dot Cellular Automata} qdjanus. A {Janus}-to-{Prolog} compiler by Saumya Debray . It is meant to be used with {Sicstus Prolog} and is mostly compliant with "Programming in Janus" by Saraswat, Kahn, and Levy. Current version: 1.3. {(ftp://cs.arizona.edu/janus/qdjanus/)}. (1992-05-18) QDOS. The Sinclair {QL}'s proprietary {operating system}. The origin of the name is uncertain (a weak pun on kudos, perhaps, as {Unix} was on {Multics}). There was another OS around from the birth of personal computers called Q.D.O.S. - Quick And Dirty Operating System. QDOS might also stand for QL Data/Disk/Drive/Device Operating System. QDOS did the usual OS sorts of things, as well as multitasking. It was unusual in several ways. It treated all devices (serial ports, mouse ports, screen, {microdrive}, {disk drive}, keyboard, etc.) uniformly, so you could print a text file direct to disk or save a binary to the screen for example. Also logical channels could be assigned to particular physical devices. Output directed to a channel would go to the appropriate in/output. This also meant you could have many windows on screen (the QL booted up from internal ROMs with 3 windows - command line, output and program listing) all independent to some extent. Channels could be redirected without affecting the way the process sent or received the data. (1996-07-22)
