Feature to get or add value to an associative array.

[Giles Bathgate]

On Monday, 16 April 2018 at 12:41:07 UTC, JN wrote:
> It's only one additional "in", but makes the code more explicit 
> and clear. I think in most cases, you will want to check if you 
> are dealing with a fetched object or a default created one, so 
> that will complicate the function even further.

You can still use a combination of `in` and the update syntax if 
you want, this doesn't take that away. In the future, for a 
concurrent implementation of associative arrays, a way of getting 
or adding an element as an atomic operation becomes more 
important. Either way the beauty of hashed based lookups is that 
they average O(1), seems a shame to double that up for no reason 
;)