On 16/10/12 21:45, Alan Malloy wrote:
But really I don't think trampoline is a very compelling problem-
solver here: the primary (only?) gain from trampoline is in reducing
stack depth, and I rather doubt that you can calculate minimax for
even a few hundred ply. So you're in no danger of a stack
Reducers don't enter into the picture at all: this code is just as
broken with clojure.core/reduce and clojure.core/map. The immediate
problem that Kevin is trying to draw your attention to is that you are
calling (reduce max (map my-fn coll)), where my-fn sometimes returns a
number, and sometimes
'my-min' and 'my-max' simply wrap core/min core/max. You mean i have to
trampoline these calls as well? return something like this? :
#(r/reduce (trampoline my-max) ;;was my-max
(r/map (fn [child] (minimize (:tree
child) (dec d))) (:children tree)))
Jim
On
if you look further down the stacktrace (where it refers to your code
instead of clojure.lang.Numbers.lt) it will give you line numbers in
your code to look at.
you are calling these trampolined functions without trampoline.
On Tue, Oct 16, 2012 at 11:24 AM, Jim - FooBar(); wrote:
> On 16/10/12
On 16/10/12 19:15, Kevin Downey wrote:
you are declaring the functions return doubles, but in fact returning
functions or doubles
yes you're right (my bad) but the same thing happens without the
type-hinting - albeit in a different place and different originating
function:
ClassCastException
you are declaring the functions return doubles, but in fact returning
functions or doubles
On Tue, Oct 16, 2012 at 11:06 AM, Jim - FooBar(); wrote:
> Hi everyone,
>
> I'm pretty sure i'm using trampoline the right way but still I get this
> exception:
>
> ClassCastException Clondie24.lib.search$s
Hi everyone,
I'm pretty sure i'm using trampoline the right way but still I get this
exception:
ClassCastException Clondie24.lib.search$search$minimize__3075$fn__3076
cannot be cast to java.lang.Number
Clondie24.lib.search/search/minimize--3075 (search.clj:47)
here is the code:
(defn sea
