Store mutable indirections in immutable data with this one weird trick!

[Timon Gehr]

On 13.11.21 13:42, Paul Backus wrote:
> 
> I guess this is what we get for trying to make memory allocation count 
> as "pure."

How else are you going to represent your values? I really don't get this 
trend of questioning whether memory allocation should be `pure`. I think 
it may be caused by thinking at the wrong level of abstraction.