From @u@@ @end|ng |rom weh|@edu@@u  Fri Mar  8 00:06:43 2019
From: @u@@ @end|ng |rom weh|@edu@@u (Shian Su)
Date: Thu, 7 Mar 2019 23:06:43 +0000
Subject: [Rd] Discrepancy between is.list() and is(x, "list")
Message-ID: <F35BFD5E-8487-485C-B6F6-7A8BBA353F40@wehi.edu.au>

Hi R-devel,

I have noticed a discrepancy between is.list() and is(x, ?list?), which I previously believed to be synonymous. On R version 3.5.2 (2018-12-20):

data(iris)
is.list(iris)    # TRUE
is(iris, ?list?) # FALSE

Is this discrepancy intentional?

Kind regards,
Shian Su

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[Rd] Discrepancy between is.list() and is(x, "list")
Shian Su