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is.null(mylist[1]) and is.null(mylist$a) returns different values

ce

Thu, Jun 15, 2017 8:33 AM

Hi

I have a list :

mylist <- list( a = NULL, b = 1, c = 2 )

$a
NULL

[1] FALSE

[1] TRUE

why? I need to use mylist[1]

Thread (6 messages)

ce is.null(mylist[1]) and is.null(mylist$a) returns different values Jun 15 Rui Barradas is.null(mylist[1]) and is.null(mylist$a) returns different values Jun 15 Huzefa Khalil is.null(mylist[1]) and is.null(mylist$a) returns different values Jun 15 Massoud Boroujerdi is.null(mylist[1]) and is.null(mylist$a) returns different values Jun 15 Jeff Newmiller is.null(mylist[1]) and is.null(mylist$a) returns different values Jun 15 William Dunlap is.null(mylist[1]) and is.null(mylist$a) returns different values Jun 15