| embrace-operator {rlang} | R Documentation |
Embrace operator {{
Description
The embrace operator {{ is used to create functions that call
other data-masking functions. It transports a
data-masked argument (an argument that can refer to columns of a
data frame) from one function to another.
my_mean <- function(data, var) {
dplyr::summarise(data, mean = mean({{ var }}))
}
Under the hood
{{ combines enquo() and !! in one
step. The snippet above is equivalent to:
my_mean <- function(data, var) {
var <- enquo(var)
dplyr::summarise(data, mean = mean(!!var))
}
See Also
[Package rlang version 1.1.3 Index]