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Merge #12800: doc: Add note about our preference for scoped enumerations ("enum class")

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0fee2b4 doc: Add note about our preference for scoped enumerations ("enum class") (practicalswift)

Pull request description:

  Add note about our preference for scoped enumerations (`enum class`).

  Context: #10742

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Wladimir J. van der Laan 2018-03-27 18:54:01 +02:00
commit 2d97611c41
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doc/developer-notes.md
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@ -39,6 +39,7 @@ code.
- `++i` is preferred over `i++`.
- `nullptr` is preferred over `NULL` or `(void*)0`.
- `static_assert` is preferred over `assert` where possible. Generally; compile-time checking is preferred over run-time checking.
- `enum class` is preferred over `enum` where possible. Scoped enumerations avoid two potential pitfalls/problems with traditional C++ enumerations: implicit conversions to int, and name clashes due to enumerators being exported to the surrounding scope.
Block style example:
```c++