deduped_map {deduped}

Apply a function to each unique element

Description

DEPRECATED as of deduped 0.2.0.

Please use deduped(lapply)() or deduped(purrr::map)() instead.

Usage

deduped_map(.x, .f, ..., .progress = FALSE)

Arguments

.x

A list or atomic vector.

.f

A function, specified in one of the following ways:

• A named function, e.g. mean.

• An anonymous function, e.g. ⁠\(x) x + 1⁠ or function(x) x + 1.

• A formula, e.g. ~ .x + 1. You must use .x to refer to the first argument. Only recommended if you require backward compatibility with older versions of R.

• A string, integer, or list, e.g. "idx", 1, or list("idx", 1) which are shorthand for ⁠\(x) pluck(x, "idx")⁠, ⁠\(x) pluck(x, 1)⁠, and ⁠\(x) pluck(x, "idx", 1)⁠ respectively. Optionally supply .default to set a default value if the indexed element is NULL or does not exist.

...

Additional arguments passed on to the mapped function.

We now generally recommend against using ... to pass additional (constant) arguments to .f. Instead use a shorthand anonymous function:

# Instead of
x |> map(f, 1, 2, collapse = ",")
# do:
x |> map(\(x) f(x, 1, 2, collapse = ","))

This makes it easier to understand which arguments belong to which function and will tend to yield better error messages.

.progress

Whether to show a progress bar. Use TRUE to turn on a basic progress bar, use a string to give it a name, or see progress_bars for more details.

Value

A list whose length is the same as the length of the input, matching the output of purrr::map().

See Also

deduped()