is.function               package:base               R Documentation

Is an Object of Type Function?

Description:

     Checks whether its argument is a function.

Usage:

     is.function(x)

Arguments:

       x: an R object.

Details:

     'is.function' is generic: you can write methods to handle specific
     classes of objects, see InternalMethods.

Value:

     'TRUE' if 'x' is a function, and 'FALSE' otherwise.

