is.siglist {sig}

Is the input a siglist?

Description

Does the input inherit from “siglist”?

Usage

is.siglist(x)

Arguments

x

Object to test.

Value

TRUE if the object inherits from class “siglist” and is.sig returns TRUE for each element of the input, and FALSE otherwise.

Examples

stopifnot(
  !is.siglist(sig(with))     #1 sig is not a siglist.
)