dateutils (version 0.1.5)

sum_na: Return the sum

Description

Return the sum of `x`. If no observations, return `NA`. This is a workaround for the fact that in data.table, `:= sum()` will return `NaN` where there are no observations

Usage

sum_na(x)

Arguments

x

data potentially with non-finite values

Value

Sum of the input

Examples

# NOT RUN {
sum_na(c(1,2,3,NA)) # 6
# }