How to use Get() and the ResultIterator?

[bobvanluijt]

Hi all,

I'm kinda stuck on using the Get() function.

My result should return three DB entries which I try to retrieve like this:
result, err := txn.Get("foobar", "RefType", refType)

How do I go over the results one by one?

Thanks!

[slackpad]

Hi @bobvanluijt you call .Next() on it to iterate through the items - see https://github.com/hashicorp/go-memdb/blob/master/txn_test.go#L451-L467 for an example. You have to call .Next() one time to get the first item, and it will return nil when the iterator is exhausted, so you can also do:

result, err := txn.Get("foobar", "RefType", refType)
if err != nil {
    return err
}

for item := result.Next(); item != nil; item = result.Next() {
    // handle each item
}

Hope that helps!

[bobvanluijt]

Ooo, thanks for that!

[fallais]

You should put it in the README, very useful ! I was also stuck !