Comments (4)
Thanks for the report 👍
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I've played around with the minimal case a couple times — it looks like the issue is not actually caused by trying to fold the tuple_of_maps
but by calling the map_is_valid
function before the fold
.
from koto.
Thanks for the fun language! It looks like it's not necessary to use the map_is_valid
function for the fold
e.g.
import io, koto, string.print
export main = ||
map_is_valid = |m| m.get("bar") != ()
tuple_of_maps = ({foo: 2}, {}, {foo: 4, bar: 2})
# okay:
# x = (tuple_of_maps[2].get("bar") != ())
# explosion:
# x = (map_is_valid tuple_of_maps[2])
n_valid = tuple_of_maps.fold(
0,
|acc, mm| debug acc + (if mm.get("bar") != () then 1 else 0))
from koto.
It turns out that calling any function before calling fold()
can trigger the issue, it seems to be an unfortunate fluke that this hasn't come up before 🙃
f = || 1, 2, 3
f().fold 0 |x, n| x += n # error: empty call stack
from koto.
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