gir: Correct usage of the closure annotation #704
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Whenever you’re describing a function that takes a callback, you should always annotate the callback argument with the argument that contains the user data using the (closure argument) annotation You should not annotate the data argument with a unary (closure). The unary (closure) is meant to be used when annotating the callback type Ref: https://gitlab.gnome.org/GNOME/mutter/-/commit/077eb80a8d9bb2968c2bfac959c2f2ca966ca7e7
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Whenever you’re describing a function that takes a callback, you should always annotate the callback argument with the argument that contains the user data using the (closure argument) annotation
You should not annotate the data argument with a unary (closure).
The unary (closure) is meant to be used when annotating the callback type
Ref:
https://gitlab.gnome.org/GNOME/mutter/-/commit/077eb80a8d9bb2968c2bfac959c2f2ca966ca7e7