
Unused declared function and data objects linter
Source:R/unused_declared_object_linter.R
unused_declared_object_linter.Rd
Checks that all defined/declared functions and data objects are used within the source file.
Functions and data objects that are marked with @export
are ignored.
Details
For use in rhino
, see the
Explanation: Rhino style guide
to learn about the details.
Examples
# will produce lint
code <- "
#' @export
public_function <- function() {
}
private_function <- function() {
}
local_data <- \"A\"
"
lintr::lint(text = code, linters = unused_declared_object_linter())
#> <text>:7:1: warning: [unused_declared_object_linter] Declared function/object unused.
#> private_function <- function() {
#> ^~~~~~~~~~~~~~~~
#> <text>:11:1: warning: [unused_declared_object_linter] Declared function/object unused.
#> local_data <- "A"
#> ^~~~~~~~~~
# okay
code <- "
#' @export
public_function <- function(local_data) {
private_function(local_data)
}
private_function <- function() {
}
local_data <- \"A\"
"
lintr::lint(text = code, linters = unused_declared_object_linter())
#> ℹ No lints found.