distillery (version 1.2-1)

is.formula: Is the R Object a Formula

Description

Tests to see if an object is a formula or not.

Usage

is.formula(x)

Arguments

x

An R object.

Value

single logical

Details

This function is a very simple one that simplifies checking whether or not the class of an object is a formula or not.

Examples

# NOT RUN {
is.formula(~1)
is.formula(1:3)
# }