Is a topic documented? — topic_exists • rdtools

Checks whether any of packages has an exact alias matching topic.

Usage

topic_exists(topic, packages = pkg_search_attached())

Arguments

topic: A single string naming an alias, matched exactly. Use topic_split() first if you need to handle qualified topics like "pkg::foo".
packages: A character vector of package names (and/or source package paths) to search, in order. Defaults to pkg_search_attached(). Unavailable packages are skipped.

Value

A single TRUE or FALSE.

Examples

topic_exists("rnorm", "stats")
#> [1] TRUE
topic_exists("rnorm", c("base", "stats"))
#> [1] TRUE
topic_exists("median")
#> [1] TRUE
topic_exists("not-a-topic", "stats")
#> [1] FALSE