Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.csd.uwm.edu!bionet!ames!haven!mimsy!chris
From: chris@mimsy.UUCP (Chris Torek)
Newsgroups: comp.lang.c
Subject: Re: entry at other than main (was w
Message-ID: <19218@mimsy.UUCP>
Date: 23 Aug 89 01:02:31 GMT
References: <19173@mimsy.UUCP> <207600032@s.cs.uiuc.edu>
Organization: U of Maryland, Dept. of Computer Science, Coll. Pk., MD 20742
Lines: 25

In article <19173@mimsy.UUCP> I suggested that SNOBOL's `$Z' construct
obtained
>>whatever is named by Z (here the global Y) ...

In article <207600032@s.cs.uiuc.edu> mccaugh@s.cs.uiuc.edu writes:
>A clearer explanation is that '$' maps the value of variable Z (the
>string 'Y') to the variable Y;

Indeed.  Well, as I said, it has been quite some time since I dealt
with SNOBOL, and it was only for a short while.  (Does not SNOBOL IV
evaluate right-to-left?  In which case, yet another way to put it
is that

	$X = $Z '0'

evaluates '0', yeilding the string '0', then evaluates Z (yeilding
the string 'Y'), then evaluates $'Y' (yeilding the value of Y, 'X'),
then `evaluating' the equals sign....)

At any rate, take whatever I say about SNOBOL IV with at least a few
grains of salt; see the reference manual (by Griswold, if I have spelled
that right) for certainty.
-- 
In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7163)
Domain:	chris@mimsy.umd.edu	Path:	uunet!mimsy!chris