From maechler@stat.math.ethz.ch  Fri Jun 30 19:15:51 2000
From: maechler@stat.math.ethz.ch (maechler@stat.math.ethz.ch)
Date: Fri, 30 Jun 2000 20:15:51 +0200 (MET DST)
Subject: [Rd] dim(a <- ...) sets invisible flag erronously (PR#587)
Message-ID: <200006301815.UAA02861@pubhealth.ku.dk>

{Nothing really harmful;  R 1.1.0}

dim(.) sets (or doesn't clear) the  ``invisible flag'' for printing in
certain circumstances:

  > dim(a <- cbind(1))
  >

does *not* print as it should :

  > dim(a)
  [1] 1 1

---

Question to the real "hackers" :

How can I check this using R code alone (not using files),
i.e. (how) can I ask an R expression if its ``invisible flag'' is set or not ?

{help(invisible) doesn't help here}.

Maybe one would want an

      is.invisible(.)

function?

-- 
Martin Maechler <maechler@stat.math.ethz.ch>	http://stat.ethz.ch/~maechler/
Seminar fuer Statistik, ETH-Zentrum  LEO D10	Leonhardstr. 27
ETH (Federal Inst. Technology)	8092 Zurich	SWITZERLAND
phone: x-41-1-632-3408		fax: ...-1228			<><

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[Rd] dim(a <- ...) sets invisible flag erronously (PR#587)
maechler@stat.math.ethz.ch