On 11-05-26 5:09 PM, James McCreight wrote:
I'm still getting used to R's scoping. I've run into the following situationvalue=0 thefunction<- function() print( value ) somefunction<- function() { value=99; thefunction() } somefunction() now, I understand that somefunction() returns 0 because thefunction() was defined with value=0 in its parent envrionment, it dosent look at all in the environment of somefunction. My question is can I re-scope thefunction in the somefunction environment?? (So that somefunction() returns 99). I've tried various uses of eval() and assign() with their keywords in the definition of somefunction and have had no luck at all. I do see that i could define thefunction in some external file and source it inside somefunction, but that seems clumsy.
Yes, you've been told how to do it: but you almost certainly shouldn't. Think of functions as functions, not as macros. Changing the environment of a function is like editing it. Would you ask how to change the body of thefunction from within somefunction? You can in R, but you shouldn't.
Duncan Murdoch ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
