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README: Clarify how to name flag types

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Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1765>
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Jonas Ådahl 2021-03-09 20:40:39 +01:00 committed by Marge Bot
parent 86435d88a2
commit dcbd96df38
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README.md
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@ -63,7 +63,16 @@ with some additions:
that may have side effects. that may have side effects.
- Instead of boolean arguments in functions, prefer enums or flags when - Instead of boolean arguments in functions, prefer enums or flags when
they're more expressive. they're more expressive. The naming convention for flags is
```c
typedef _MetaSomeThingFlags
{
META_SOME_THING_FLAG_NONE = 0,
META_SOME_THING_FLAG_ALTER_REALITY = 1 << 0,
META_SOME_THING_FLAG_MANIPULATE_PERCEPTION = 1 << 1,
} MetaSomeThingFlags;
```
- Use `g_new0()` etc instead of `g_slice_new0()`. - Use `g_new0()` etc instead of `g_slice_new0()`.