Nothing
calc_mcse_binom <- function(p, B){
stopifnot(is.numeric(unlist(p)), all(unlist(p) >= 0), all(unlist(p) <= 1),
is.integer(B))
lapply(p, function(x) if(any(x == 0:1)) NA_real_ else sqrt(x*(1-x)/B))
}
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