R: passing expression to an inner function

Question

Further delving into the mysteries of R evaluation...This is closely related to my previous question ( How to write an R function that evaluates an expression within a data-

Answer 1

You can use three dots to gather arguments and pass them to another function, is that what you mean?

ftop=function(...) f(...)
f=function(a,b) a[b]

a=data.frame(b=10)

ftop(a,"b")

f(a,"b")