Return first non-missing element

It is an alias for data.table fcoalesce. For details see fcoalesce

coalesce(...)

Arguments

...	vectors

Value

A vector the same length as the first ... argument with NA values replaced by the first non-missing value.

Examples

# examples from dplyr
x = sample(c(1:5, NA, NA, NA))
coalesce(x, 0L)
#> [1] 5 0 4 0 2 3 1 0

y = c(1, 2, NA, NA, 5)
z = c(NA, NA, 3, 4, 5)
coalesce(y, z)
#> [1] 1 2 3 4 5