[Rd] Assignment in environment

Daniel Kaschek
Sun, 07 Feb 2016 16:44:27 -0000

On So, Feb 7, 2016 at 2:46 , Duncan Murdoch <murdoch.duncan at gmail.com>
wrote:

> An assignment function should return the modified value.  So it looks
> like you would need
>
>
> 'getValue<-' <- function(x, value) {
>    environment(x)$mylist <- value
>    x
>  }

Thanks. I have not thought of a return value. That makes the difference.


>
> but in fact, this doesn't work:
>
> getValue(fn)[[1]] <- 3
> Error in getValue(fn)[[1]] <- 3 : could not find function
"getValue"


I have a "getValue" function anyway. It was even the other way round.
I
wanted to assign values without a function "getValue<-" and was
rebuked
by R that this function was missing.

Thanks to both of you, Peter and Duncan.

Best regards,
Daniel