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docs: clarify attrset __functor

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Gwenn Le Bihan 2025-05-19 16:58:16 +02:00 • committed by GitHub
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4
doc/manual/source/language/syntax.md
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@ -225,8 +225,8 @@ passed in first , e.g.,
```nix
let add = { __functor = self: x: x + self.x; };
inc = add // { x = 1; };
in inc 1
inc = add // { x = 1; }; # inc is { x = 1; __functor = (...) }
in inc 1 # equivalent of `add.__functor add 1` i.e. `1 + self.x`
```
evaluates to `2`. This can be used to attach metadata to a function