r - Use character string as function argument

Question

I'm sure this is simple, but I cannot find a solution ... I would like to use a variable containing a character string as argument for a function.

x <- c(1:10)
myoptions <- "trim=0, na.rm=FALSE"

Now, something like

foo <- mean(x, myoptions)

should be the same as

foo <- mean(x, trim=0, na.rm=FALSE)

Thanks in advance!

Answer 1

You can use eval and parse:

foo <- eval(parse(text = paste("mean(x,", myoptions, ")")))