Hi, I wanted to create a list of closures. When I use Map(), mapply(),
lapply(), etc., to create this list, it appears that the wrong arguments are
being passed to the main function. For example:
Main function:
> adder <- function(x) function(y) x + y
Creating list of closures with Map():
> plus <- Map(adder,c(one=1,two=2))> plus$one(1)[1] 3> plus$two(1)[1] 3
Examining what value was bound to "x":
> Map(function(fn) get("x",environment(fn)),plus)$one[1] 2$two[1] 2
This is what I had expected:
> plus <- list(one=adder(1),two=adder(2))> plus$one(1)[1] 2> plus$two(1)[1] 3
> Map(function(fn) get("x",environment(fn)),plus)$one[1] 1$two[1] 2
Anyone know what's going on? Thanks much!
Stephen
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