Diffing_with...ne.Parameters(3)

💖 NAME 💖

okay so bestie, we're on the Diffing_with...ne.Parameters(3) page in the OCaml library manual — yes, that title is giving truncated-but-iconic — and the star of the show is Diffing_with_keys.Define.Parameters.

It has no description. That's it. No lore, no backstory, just vibes and a module type. 🫶

✨ Module type ✨

The module type is Diffing_with_keys.Define.Parameters, fr fr.

🎀 Documentation 🎀

Here's the whole thing, copied exactly so we don't lose a single crumb:

Module type Parameters
 = sig end

val weight : Diffing_with_keys.Define.change -> int

val test : D.state -> Diffing_with_keys.Define.left ->
       Diffing_with_keys.Define.right -> (unit, Diffing_with_keys.Define.diff)
       result

val update : Diffing_with_keys.Define.change -> D.state -> D.state

val key_left : D.left -> string

val key_right : D.right -> string

A few tiny translations for the group chat:

• weight takes a Diffing_with_keys.Define.change and gives you an int 💅
• test takes D.state, then Diffing_with_keys.Define.left, then Diffing_with_keys.Define.right, and returns (unit, Diffing_with_keys.Define.diff) result ✨
• update takes a Diffing_with_keys.Define.change and a D.state, and returns a D.state 🌸
• key_left takes a D.left and returns a string 🎀
• key_right takes a D.right and returns a string 🦋

no cap: D.state, D.left, and D.right show up exactly like that in the signature. The page doesn't expand D or describe any behavior beyond these types. 🙈

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that's the whole page, bestie — it's from OCamldoc, dated 2026-06-22, and it ate absolutely zero notes. periodt. 💜