LUA Script returning key and value?

[Kevin Burton]

I have the following script (hopefully to return a key AND a value):

var script = @"

local t = {}

for k,v in ipairs(KEYS) do

    if redis.call('exists', v) == 1 then

        t[v] = redis.call('get', v)

    end

end

return t

";

I am using StackExchange.Redis so I am evaluating the return like:

            foreach(RedisResult result in (RedisResult[])cache.ScriptEvaluate(script, newkeys)) {

I see that I can cast the RedisResult to a RedisKey or RedisValue but there doesn't seem to be a way to access both. So my question is twofold. One, can I expect the script to return a key and value? Two, Should I expect an array of RedisResult like I have shown above? If so how do I get the key and value? Ideas?

Thank you.

[Kevin Burton]

As a corollary, the return from a command like MGET is a list of values. Can I assume that the list returned has a one-to-one correspondence to the list passed at all times? For example can I always be assured that MGET a b c returning 1) 1 2) 2 3) 3 that the key 'a' has a value of '1' etc?

[Josiah Carlson]

I don't have an answer for the first part of your question regarding StackExchange Redis, but on the MGET side of things: yes, you *can* expect that the returned results are in the exact same order as the keys that you put in. Anything else would be a insanely broken API.

 - Josiah

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