Semantics of shared

[Walter Bright]

Robert Jacques wrote:
> I don't see a place for "maybe shared" that isn't already handled by 
> simply "shared".

I gave a flip and incomplete answer there.

I'm not sure there is even a point to a function that could handle both 
shared and unshared with the same code. First of all, sharing is going 
to need some sort of synchronization; you're going to try and minimize 
the amount of code that has to deal with shared. I can't see trying to 
run an in-place sort on a shared array, for example. Can you imagine two 
threads trying to sort the same array?

You're going to want to approach manipulating shared data differently 
than unshared.