From mtmorgan at fhcrc.org  Thu Oct  4 22:57:18 2012
From: mtmorgan at fhcrc.org (Martin Morgan)
Date: Thu, 04 Oct 2012 13:57:18 -0700
Subject: [Rd] identical() fails to compare isS4(<S4 instance>) to TRUE
Message-ID: <506DF82E.7080507@fhcrc.org>


 > setClass("A", "integer")
 > isS4(new("A"))
[1] TRUE
 > identical(isS4(new("A")), TRUE)
[1] FALSE

 > sessionInfo()
R Under development (unstable) (2012-10-04 r60876)
Platform: x86_64-unknown-linux-gnu (64-bit)

locale:
  [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C
  [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8
  [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8
  [7] LC_PAPER=C                 LC_NAME=C
  [9] LC_ADDRESS=C               LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base
-- 
Computational Biology / Fred Hutchinson Cancer Research Center
1100 Fairview Ave. N.
PO Box 19024 Seattle, WA 98109

Location: Arnold Building M1 B861
Phone: (206) 667-2793



[Rd] identical() fails to compare isS4(<S4 instance>) to TRUE
Martin Morgan