Re: Plist-put changes literal argument

[Yuan Fu]

> On Sep 5, 2020, at 11:55 AM, Philipp Stephani <p.stephani2@gmail.com> wrote:
> 
> Am Do., 3. Sept. 2020 um 02:18 Uhr schrieb Yuan Fu <casouri@gmail.com 
> <mailto:casouri@gmail.com>>:
>> 
>>> 
>>> I also tried setcar, same result. So Elisp doesn’t copy arguments?
>>> 
>>> Yuan
>> 
>> 
>> Ok, think more of it, it would be weird to make a full copy of cons (and 
>> other non-primitive values) on function call. I wonder how do other 
>> languages deal with this, because I never run into problems like this 
>> (except for in Python, with its default argument values).
> 
> Most other languages don't have literals of mutable types; or, if they
> do, they create a new object for each evaluation of the literal
> expression.

I see, that explains it. Thanks!

Yuan