[R] how to debug (mtrace) a function defined inside a function?

[Andre Zege]

Hi, everyone. I am using a fair amount of closures in my code. Problem i am
experiencing is i cannot figure out how to mtrace functions defined within a
function. There must be some way to name such function for mtrace to see it
and let me step into it. For example, say i have code


mymodel<-function(){
 data<-numeric(0)
 build<-function(){
   data<<-1
 }
 
 m<-list()
 m$build<-build
 m
}


How do I mtrace build function defined inside mymodel function so that i can
step into build?
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