Lasso 9 Hangs on Inserting Pair with Map Value into Array?

Question

EDIT: I accidentally misrepresented the problem when trying to pare-down the example code. A key part of my code is that I am attempting to sort the array after adding elements to it. The hang appears on sort, not insert. The following abstracted code will consistently hang:

<?=

local('a' = array)

#a->insert('test1' = map('a'='1'))
#a->insert('test2' = map('b'='2')) // comment-out to make work

#a->sort

#a

?>

I have a result set for which I want to insert a pair of values into an array for each unique key, as follows:

resultset(2) => {
    records => {
        if(!$logTypeClasses->contains(field('logTypeClass'))) => {
            local(i) = pair(field('logTypeClass'), map('title' = field('logType'), 'class' = field('logTypeClass')))
            log_critical(#i)
            $logTypeClasses->insert(#i) // Lasso hangs on this line, will return if commented-out
        }
    }
}

Strangely, I cannot insert the #i local variable into thread variable without Lasso hanging. I never receive an error, and the page never returns. It just hangs indefinitely.

I do see the pairs logged correctly, which leads me to believe that the pair-generating syntax is correct.

I can make the code work as long as the value side of the pair is not a map with values. In other words, it works when the value side of the pair is a string, or even an empty map. As soon as I add key=value parameters to the map, it fails.

I must be missing something obvious. Any pointers? Thanks in advance for your time and consideration.

Answer 1

I can verify the bug with the basic code you sent with sorting. The question does arise how exactly one sorts pairs. I'm betting you want them sorted by the first element in the pair, but I could also see the claim that they should be sorted by last element in the pair (by values instead of by keys)

One thing that might work better is to keep it as a map of maps. If you need the sorted data for some reason, you could do map->keys->asArray->sort

Ex:

local(data) = map('test1' = map('a'=2,'b'=3))
#data->insert('test2' = map('c'=33, 'd'=42))

local(keys) = #data->keys->asArray
#keys->sort
#keys

Even better, if you're going to just iterate through a sorted set, you can just use a query expression:

local(data) = map('test1' = map('a'=2,'b'=3))
#data->insert('test2' = map('c'=33, 'd'=42))

with elm in #data->eachPair
let key   = #elm->first
let value = #elm->second
order by #key
do { ... }