Restricted EPL

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(REPL) The efficient subset of EPL used to write the core of Multics.

Last updated: 2003-06-23

restriction

A bug or design error that limits a program's capabilities, and which is sufficiently egregious that nobody can quite work up enough nerve to describe it as a feature. Often used (especially by marketroid types) to make it sound as though some crippling bogosity had been intended by the designers all along, or was forced upon them by arcane technical constraints of a nature no mere user could possibly comprehend (these claims are almost invariably false).

Old-time hacker Joseph M. Newcomer advises that whenever choosing a quantifiable but arbitrary restriction, you should make it either a power of 2 or a power of 2 minus 1. If you impose a limit of 17 items in a list, everyone will know it is a random number - on the other hand, a limit of 15 or 16 suggests some deep reason (involving 0- or 1-based indexing in binary) and you will get less flamage for it. Limits which are round numbers in base 10 are always especially suspect.

[Jargon File]

Restructured EXtended eXecutor

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(REXX, or "System Product Interpreter", originally known as "REX") A scripting language for IBM VM and MVS systems, developed by M. Cowlishaw at IBM ca. 1979, replacing EXEC2.

Versions: PC-Rexx for MS-DOS, AREXX for the Amiga, the OS/2 implementation from IBM, WINREXX (Rexx for Windows, from Quercus systems) and Personal Rexx (Rexx for MS-DOS, from Quercus systems).

See also Regina, freerexx, imc.

REXXWARE is an implementation of REXX for Novell NetWare.

Usenet newsgroup: comp.lang.rexx.

["The REXX Language: A Practical Approach to Programming", M.F. Cowlishaw, 1985].

Last updated: 1992-05-13

restructuring

The transformation from one representation form to another at the same relative abstraction level, while preserving the subject system's external behaviour (functionality and semantics).

Nearby terms:

Resource Reservation ProtocolRestricted EPLrestrictionRestructured EXtended eXecutor

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