is.function {base}
Is an Object of Type (Primitive) Function?
Description
Checks whether its argument is a (primitive) function.
Usage
is.function(x) is.primitive(x)
Arguments
- x
- an R object.
Details
is.primitive(x) tests if x is a primitive function (either a "builtin" or "special" as described for typeof)? It is a primitive function.
Values
TRUE if x is a (primitive) function, and FALSE otherwise.
Examples
is.function(1) # FALSE is.function(is.primitive) # TRUE: it is a function, but .. is.primitive(is.primitive) # FALSE:it's not a primitive one, whereas is.primitive(is.function) # TRUE: that one *is*
Documentation reproduced from R 3.0.1. License: GPL-2.