assertive.code (version 0.0-3)

assert_is_loaded: Is the input a symbol in a loaded DLL?

Description

Checks to see if the input DLL (a.k.a. shared object) is loaded.

Usage

assert_is_loaded(x, severity = getOption("assertive.severity", "stop"))
is_loaded(x, PACKAGE = "", type = c("", "C", "Fortran", "Call",
  "External"), .xname = get_name_in_parent(x))

Value

is_loaded wraps is.loaded, providing more information on failure. assert_is_loaded returns nothing but throws an error if is_loaded returns FALSE.

Arguments

x

A string naming the symbol in a DLL to check.

severity

How severe should the consequences of the assertion be? Either "stop", "warning", "message", or "none".

PACKAGE

A string naming an R package to restrict the search to, or "" to check all packages. Passed to is.loaded.

type

A string naming the type of external code call to restrict the search to, or "" to check all type. Passed to is.loaded.

.xname

Not intended to be used directly.

See Also

is.loaded.