Howdy, Galt:
> Galt wrote: make-adder: func [x] [func [y] [+ x y]]
>
> I am guessing that the problem is that there is only one
> copy of the block [+ x y] and that it has a context,
> whatever that is, and that it can only have one context,
> and that one gets changed everytime you run make-adder
> again with a new parameter value for x. So running
> make-adder a 2nd time messes up the value hidden in the
> context of the first?
There's only one context for make-adder where the value for
x is looked up in your returned adder function. You'd need
to create a new context for each x. You'll also need to
keep those contexts around to be GC safe. Here is one
possible way of creating these functions based solely on
contexts:
save-em: copy []
make-adder: func [x][
get in last append save-em make object! [
z: x f: func [y][+ z y]
] 'f
]
The above creates new contexts to hold the different values
of X in your separate add functions. (It also creates new
functions that use those X values).
-jeff
