On Sat, 20 Feb 2010 17:27:34 -0800 (PST)
"sailormoo...@gmail.com" wrote:
> Hi :
>
> Say, I have a (def *a (ref {:b [{:c 5}]})) .
> I want to add 1 to the :c inside, how would I write?
> (Note: the value 5 is in (:b 0 :c), while 0 is the array index)
>
> (dosync (alter *a __ )) ; ple
Hi :
Say, I have a (def *a (ref {:b [{:c 5}]})) .
I want to add 1 to the :c inside, how would I write?
(Note: the value 5 is in (:b 0 :c), while 0 is the array index)
(dosync (alter *a __ )) ; please help me fill the blank.
Someone mention I can use the zipper library or the walker
