On 15/05/2009, at 11:19 AM, myshare wrote:
hi guys,
How do you check if variable is initialized/created, tried :
is.nan(xxx)
is.null(xxx)
is.na(xxx)
exists(xxx)
all of them return :
Error: object "xxx" not found
I need true/false result ?
exists("xxx") # Note the quote marks; requires the variable name as a
string.
cheers,
Rolf Turner
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