List the dependencies of a function or expression.

tar_deps(expr)

Arguments

expr

A quoted R expression or function.

Value

Character vector of the dependencies of a function or expression.

Details

targets detects the dependencies of commands using static code analysis. Use tar_deps() to run the code analysis and see the dependencies for yourself.

See also

Examples

tar_deps(x <- y + z)
#> [1] "+" "<-" "y" "z"
tar_deps({ x <- 1 x + a })
#> [1] "{" "+" "<-" "a"
tar_deps(function(a = b) map_dfr(data, ~do_row(.x)))
#> [1] ".x" "b" "data" "do_row" "map_dfr"