如何将对象名称转换为字符对象

Question

I have a function, that just do a print, mytable is a global variable

f <- function(field){ print(mytable[mytable$a == field,]) }

My problem is that this function is called (not by me, it is sent as command to R by another process like an editor) as f(EXAMPLE) , f(EXAMPLE2) ... this fails because EXAMPLE is not a defined variable, I would like EXAMPLE to be "EXAMPLE" (a string).

What can I do in the function f for field to have the value "EXAMPLE" when f(EXAMPLE) is evaluated ?

I realize that this is very convoluted...

Answer 1

You can use deparse(substitute(yourobject)) :

R> deparse(substitute(foo))
[1] "foo"