Re: What's missing in ELisp that makes people want to use cl-lib?

[Gerd Möllmann]

Gerd Möllmann <gerd.moellmann@gmail.com> writes:

> João Távora <joaotavora@gmail.com> writes:
>
>> On Thu, Nov 16, 2023 at 5:44 PM Gerd Möllmann <gerd.moellmann@gmail.com> 
>> wrote:
>>>
>>> João Távora <joaotavora@gmail.com> writes:
>>>
>>> > AFTER loading it
>>> >
>>> > ...
>>>
>>> The magnitude of the difference when additional methods are defined I
>>> find surprising.
>>
>> Speaking of that, be sure to reproduce my results.   These are results
>> from an Emacs -Q run, and fortunately they are consistent across runs
>> in the same machine.  In my normal work session, I sometimes get much
>> more dramatic slowdowns with these very same benchmarks, and I don't
>> know why, maybe some garbage collection effect?
>
> Yeah, please see my other mail, I've looked into cl-generics a bit. Not
> that I could explain anything now :-)

Hm, that's actually not true.

One thing that one can conclude, I think, is that the very first
execution of a generic function with a given argument type combination
(i.e. an effective method) does not count, so to say, because that
computes the effective memthod and memoizes it.