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100228
2010 Nov 12
1
SEXPs and slots
Hello,
I've created this class:
setClass("example",
representation (
size = "numeric",
id = "character"
)
)
Suppose I create a new instance of this class:
> x <- new("example", 4, "id_value")
This creates an S4 object with two slots. Am I correct in thinking that
slots are "filled" by SEXPs?
2010 Nov 15
1
SEXP and slots
...ternal(inspect(eg))
>> @df70e48 25 S4SXP g0c0 [OBJ,NAM(2),gp=0x10,ATT]
>> ATTRIB:
>> @df70ef0 02 LISTSXP g0c0 []
>> TAG: @769258 01 SYMSXP g1c0 [MARK] "size"
>> @c0f6db8 14 REALSXP g0c1 [NAM(2)] (len=1, tl=0) 4
>> TAG: @15b0228 01 SYMSXP g1c0 [MARK,NAM(2)] "id"
>> @c0f6178 16 STRSXP g0c1 [NAM(2)] (len=1, tl=0)
>> @12341c80 09 CHARSXP g0c2 [gp=0x20] "id_value"
>> TAG: @607ce8 01 SYMSXP g1c0 [MARK,NAM(2),gp=0x4000] "class"
>> @c0f6d58 16 STR...