remove element from list by it index

[tantra]

Hello

Is it possible to remove element from list by it index? I read manual
and does't find such command. Is it possible to add this feature?

[Demis Bellot]

Not really there are some comments about this at the end of this page:

http://code.google.com/p/redis/wiki/LremCommand

I'm doing a really lam0 hack using whats available by replacing the element at index (LSET) with a UUID/GUID then LREM the UUID/GUID by value.

- Demis

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[Salvatore Sanfilippo]

On Thu, Feb 18, 2010 at 10:47 AM, Demis Bellot <demis....@gmail.com> wrote:
> Not really there are some comments about this at the end of this page:
> http://code.google.com/p/redis/wiki/LremCommand
> I'm doing a really lam0 hack using whats available by replacing the element
> at index (LSET) with a UUID/GUID then LREM the UUID/GUID by value.
> - Demis

Actually it's not a bad trick at all... in the general form this could
be something like to LSETting to an "invalid" element, like
"__deleted__", and then calling LREM against it.

The reason there there isn't a remove by index operation is that it
does not play well with Redis atomic operations. There is no way
without an explicit lock to use it in a safe way.

Cheers,
Salvatore

--
Salvatore 'antirez' Sanfilippo
http://invece.org

"Once you have something that grows faster than education grows,
you’re always going to get a pop culture.", Alan Kay