Aggregate function: returns the last value in a group.

## Usage

last(x, ...)

# S4 method for characterOrColumn
last(x, na.rm = FALSE)

## Arguments

x

column to compute on.

...

further arguments to be passed to or from other methods.

na.rm

a logical value indicating whether NA values should be stripped before the computation proceeds.

## Details

The function by default returns the last values it sees. It will return the last non-missing value it sees when na.rm is set to true. If all values are missing, then NA is returned. Note: the function is non-deterministic because its results depends on the order of the rows which may be non-deterministic after a shuffle.

## Note

last since 1.4.0

Other aggregate functions: avg(), column_aggregate_functions, corr(), count(), cov(), first()

## Examples

if (FALSE) {
last(df$c) last(df$c, TRUE)
}