codetools (version 0.2-20)

showTree: Print Lisp-Style Representation of R Expression

Description

Prints a Lisp-style representation of R expression. This can be useful for understanding how some things are parsed.

Usage

showTree(e, write = cat)

Arguments

e

R expression.

write

function of one argument to write the result.

Author

Luke Tierney

Examples

showTree(quote(-3))
showTree(quote("x"<-1))
showTree(quote("f"(x)))