twiddler (version 0.4-0)

unboundVariables: Find the unbound variables of an R expression...

Description

Find the unbound variables of an R expression

Usage

unboundVariables(qexpr)

Arguments

qexpr

The (quoted) R expression to return the unbound variables for.

Value

• The unbound variables of expr.

Details

Returns the unbound variables of an R expression expr. The unbound variables are the variables in expr that are not bound (do not exist) in the environment of the caller of unboundVariables.