Web lists-archives.com

Re: ordered string-list considered harmful, was Re: [PATCH v3] Allow aliases that include other aliases




On Fri, Sep 07 2018, Jonathan Nieder wrote:

> Jeff King wrote:
>
>> I don't see any point in generating a sorted list and _then_ making an
>> auxiliary hashmap. My idea was that if you're using a sorted string-list
>> for lookup, then you can replace the whole thing with a hash (inserting
>> as you go, rather than sorting at the end).
>
> What if I'm sorting a string list in preparation for emitting a sorted
> list, and I *also* want to perform lookups in that same list?  In
> other words:

If this turns out to be a common use-case perhaps the easiest way to
support that would be to make the hashmap (optionally?) ordered, as Ruby
1.9 did with their hash implementation:
https://www.igvita.com/2009/02/04/ruby-19-internals-ordered-hash/