Addition involving numeric(0) values

Question

Suppose x is a real number, or a vector. i is valued-False. Then x[i] will return numeric(0). I would like to treat this as a real number 0, or integer 0, which are both fit for

Answer 1

You can use max/min with 0 to get 0 as output when input is numeric(0).

x <- 1:10
max(x[FALSE], 0)
#[1] 0

min(x[FALSE], 0)
#[1] 0