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  "path": "/t/haskells-missing-mutable-reference-type/14248?page=2#post_27",
  "publishedAt": "2026-06-10T12:29:21.000Z",
  "site": "https://discourse.haskell.org",
  "textContent": "OK, so are we agreed, then, that if `IOScopedRef` existed then I could instantiate the `Logger` argument to `writeUserData` to get the behaviour I desire? And that with only the primitives provided by Haskell as it currently stands, the `Logger` argument to `writeUserData` cannot be instantiated in a way that gives me the behaviour that I desire. Instead `Logger` or `writeUserData` or both would need to be changed?\n\nBurningWitness:\n\n> With references the library would declare an implicit configuration reference and you’d augment that for all functions invoked within a context.\n\nI don’t know what “with references” means.",
  "title": "Haskell's missing mutable reference type"
}