commandline session
> dfrm print(dfrm
dfrm
> print(dfrm)
V1 V2
1 Name Jeffrin
2 Age 35
3 Sex Male
> dfrm print(dfrm)
V1
1 Name-Jeffrin
2 Age-35
3 Sex-Male
> dfrm print(dfrm)
V1
1 Name-Jeffrin
2 Age-35
3 Sex-Male
> class(dfrm$V1)
[1] "factor"
> class(dfrm$V1)
[1] "factor"
> class(dfrm$V2)
[1] "NULL"
> class(dfrm$V3)
[1] "NULL"
>
$ 4.2.20 6 506---> cat first.txt Name-Jeffrin Age-35 Sex-Male $ 4.2.20 7 507--->