[kibwen]

  > much to my disappointment as I'm just learning rust

Then prepare to be disappointed by Haskell as well, where the equivalent function is called `fromJust`. :P

Both languages discourage the use of these constructs, but they exist for good reasons.

[codygman]

> Both languages discourage the use of these constructs, but they exist for good reasons.

Curious, what are your good reasons for fromJust in Haskell?