Ask HN: what is Noul

Very little on its own. The captured page is the title plus the post body, which restates that Noul is for true-or-false decisions and is not a boolean. No discussion, no reactions to record, and the entry copy calls it a question with no replies.

The thread asserts it is not one, and stops there. The post frames Noul as a yes-or-not probability that sits alongside Choice and Score. It never says how that probability is calibrated or how it differs numerically from a thresholded boolean, and the entry copy points you at the primitive page instead.

Not in the text that was captured. There is no reply, no edit and no follow-up commentary on the page, just the one-paragraph claim that Jev is not a boolean. Any judgment it offers about the primitive would have to come from TypeSafe's own material.

Read it as a signal that the launch reached the front page, not as evaluation. Nothing is tested or benchmarked, no use case is walked through, and there is no author listed in the entry beyond the posting account. The definition of Noul is the part worth chasing down elsewhere.

hbarka posted it on 18 September 2026. It drew 2 points and no comments.

Choice for discrete decisions, Score for continuous ones, and Noul for a yes-or-not decision that the post insists is not a boolean but a true-or-false probability.

No. Nothing is tested or benchmarked and there is no use-case walkthrough; the post is a one-paragraph question with no replies, so the definition has to come from TypeSafe's own material.