How to slice column with character object in data table in R?

Question

How to slice column with character object in data table in R? I have tried this piece of codes but it does not work

i <- "Spot"    
DT[1,i]

I want the code to return the result as the same as

DT[1,"Spot"]

Can I ask what is the correct way to do it with the character obejct i instead of the character itself "Spot"?

Answer 1

Try with

DT[1, ..i]

Or use

DT[1, i, with = FALSE]

data

library(data.table)
DT <- data.table(Spot = 1:5, col2 = 6:10)