On Tuesday 20 July 2004 06:19, John Hendrickx wrote:
> Couldn't eval be modified to automatically parse arguments if they're
> not expressions? Something like:
> eval2<-function(arg) {
> if (!is.expression(arg)) arg<-parse(text=arg)
> eval(arg)
> }
> Would a construction like eval2 have a downside or cause problems
> down the line?
If eval itself is modified, that would cause backward incompatibilities.
e.g.,
> k = "mystring"
> eval(k)
[1] "mystring"
> eval2(k)
Error in eval(expr, envir, enclos) : Object "mystring" not found
Deepayan
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