i've got a mutable list of <Any>. would like to iterate through it in a for loop.

Great, what's going wrong?

for loop range must have an iterator error

Can you post a complete code sample?

var ast = readfromtokens(tokenise(str).toMutableList()) for (e in ast) print(e + "(" + e.getClass().toString + ")")

A complete code sample that I can actually run, how can I possibly know what's going on in this code when you don't show the signature of

readFronTokens

?

it's a mutable list of Any

Please post some example code I can actually run: https://stackoverflow.com/help/minimal-reproducible-example