One of my favourite languages, Pop-11, does it in quite a nice way. You define a separate subroutine for the lvalue side - known as an updater.
For example, a function to access and update the second element of a linked list can be written in Pop-11 like this:
define updaterof second(value, list);
value -> hd(tl(list))
[a b c d] -> list;
42 -> second(list);
** [a 42 c d]
All the advantages of writing separate setter/getter functions without the noise (as I see it) in the function names.
In Pop-11 lvalues are poorly named, since they appear on the right! Doing value -> something in Pop-11 is the same as something = value in perl.
I find it reads well (something goes into something else) and it also solves that whole "confusing = with ==" problem.
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