On Thu, Mar 31, 2011 at 3:24 PM, Laurent PETIT <laurent.pe...@gmail.com> wrote:
> 2011/3/31 Ken Wesson <kwess...@gmail.com>
>>
>> On Wed, Mar 30, 2011 at 12:02 PM, Laurent PETIT <laurent.pe...@gmail.com>
>> wrote:
>> > Except in 1.3 it will be a little bit harder to do "throw-away"
>> > per-thread
>> > memoizes for vars you do no "own" if their author didn't make their
>> > holding
>> > var :dynamic ('cause then you will not be able to rebind them).
>> >
>> > This is close to being a problem for paredit.clj (not tested yet), but
>> > hopefully I'll discover that I'm using memoize this way with paredit's
>> > own
>> > functions only ...
>>
>> You'll still be able to use
>>
>> (ns foo.core
>>  (use (somens.baz :exclude quux)))
>>
>> (def quux (memoize somens.baz/quux))
>>
>> (code that
>>  (uses quux
>>    (goes here)))
>
> Indeed but that's not what I meant to express. I was talking about a more
> "volatile" memoization, one which does not stay around until the
> foo.core/quux root's value is explicitly replaced (and hopefully garbage
> collected).

Well, there's always

(ns foo,.core
  (use ...))

(some code
  (let [quux (memoize quux)]
    (more code)))

when you want the memoized version locally, and don't mind creating it
anew (with no memory) each time a particular code path is called.

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