User definable operators

William Clodius <wclodius@lanl.gov>
14 Dec 1996 00:38:47 -0500

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[19 later articles]
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From: William Clodius <wclodius@lanl.gov>
Newsgroups: comp.compilers
Date: 14 Dec 1996 00:38:47 -0500
Organization: Los Alamos National Lab
Keywords: design, question

Many programming languages allow the user to overload of language
defined operators. But a few languages also allow the user to define
their own operators. I would like to have some feedback on the
experience of others with user definable operators with respect to
specifying their syntax, associativity, precedence, semantics (e.g.,
side effects or not), etc.
--
William B. Clodius Phone: (505)-665-9370
Los Alamos Nat. Lab., NIS-2 FAX: (505)-667-3815
PO Box 1663, MS-C323 Group office: (505)-667-5776
Los Alamos, NM 87545 Email: wclodius@lanl.gov
[My experience with such languages has been miserable. It means that no
two programs are actually written in the same language, so they're all
unreadable. Extensible languages enjoyed a short vogue in the 1970s, and
I wasn't sad to see them go. See Cheatham's EL/1 and Irons' IMP72. -John]


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