Implementing a tree with recursive Algebraic

[Adam D. Ruppe]

On Friday, 15 June 2018 at 14:53:13 UTC, Kamil Koczurek wrote:
> Can I somehow fix this, or is my approach inherently flawed?

A tree there would be storing a copy of a tree which is storing a 
copy of a tree... where would it end?

You can make the tree store a *pointer* to a tree though. That's 
the traditional way to do it and it works here too.