Feature #12933: Add Some and Optional

• Status: Closed
• Assignee: -
• Target version: -

[saveav (Adam Pahlevi Baihaqi)]

What if we have Optional and None as a class, and which we can use like this:

have_data = Optional(5).get # returns 5
have_data = Some(nil) # raise error
have_data = Some(operation).expect("cannot be nil") # raise cannot be nil if operation returned nil

[saveav (Adam Pahlevi Baihaqi)]

• Tracker changed from Bug to Feature

Change to feature from bug

[matz (Yukihiro Matsumoto)]

• Status changed from Open to Closed

I think it should be implemented in gem (at least for the beginning).
After the gen got popular, we can consider making it standard.

Matz.