Hi there,
I happened to find the following code can generate a data frame with
same column name.
> x <- data.frame(a=c(1,2,3))
> y <- data.frame(a=c(2,3,4))
> z <- cbind(x,y)
However, in this case, one can not use the $ to extract the second
column, right?
Is it possible to prevent the cbind() produce a data frame with same
column name?
Best,
Jinsong
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