Re: Plist-put changes literal argument

[Philipp Stephani]

Am Do., 3. Sept. 2020 um 02:18 Uhr schrieb Yuan Fu <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.