tar_deps: Code dependencies

In targets: Dynamic Function-Oriented 'Make'-Like Declarative Pipelines

Code dependencies

Description

List the dependencies of a function or expression. tar_deps() expects the expr argument to be an unevaluated expression, whereas tar_deps_raw() expects expr to be an evaluated expression object. Functions can be passed normally in either case.

Usage

tar_deps(expr)

tar_deps_raw(expr)

Arguments

expr	An R expression or function. tar_deps() expects the expr argument to be an unevaluated expression, whereas tar_deps_raw() expects expr to be an evaluated expression object. Functions can be passed normally in either case.

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.

Value

Character vector of the dependencies of a function or expression.

See Also

tar_branches(), tar_network()

Other inspect: tar_manifest(), tar_network(), tar_outdated(), tar_sitrep(), tar_validate()

Examples

tar_deps(x <- y + z)
tar_deps(quote(x <- y + z))
tar_deps({
  x <- 1
  x + a
})
tar_deps(function(a = b) map_dfr(data, ~do_row(.x)))
tar_deps_raw(function(a = b) map_dfr(data, ~do_row(.x)))

targets documentation built on Oct. 3, 2024, 1:11 a.m.