# Re: \[PATCH v4 3/9\] checkout.\[ch\]: move struct declaration into \*.h

- From: Junio C Hamano \<hidden\>
- Date: 2018-06-01 02:14:55 
- List: git
- Page: https://ratatoskr.run/git/2018/06/7769336
- Thread: https://ratatoskr.run/git/2018/06/7769336/t.md

```text
Thomas Gummerer [ref] writes:

> We seem to have plenty of structs defined in '.c' files, if they are
> only needed there.  Its use also seems to be single purpose for the
> callback data, so I'm a bit puzzled how having this in a header file
> instead of the .c file would be helpful?
>
> I feel like having only the "public" part in the header file also
> helps developers that are just looking for documentation of the
> functions they are looking at, by having less things to go through,
> that they wouldn't necessarily care about.

Yup, sounds like a sensible criterion to choose between <*.h> and
<*.c>.
```