NL.8: elaborate on reserved identifiers (#2131)

* NL.8: elaborate on reserved identifiers

* Update CppCoreGuidelines.md

* Update CppCoreGuidelines.md

* Update CppCoreGuidelines.md

---------

Co-authored-by: Herb Sutter <herb.sutter@gmail.com>
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Jan Schultke 2023-10-12 21:52:16 +02:00 committed by GitHub
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@ -21626,7 +21626,8 @@ ISO Standard, use lower case only and digits, separate words with underscores:
* `vector`
* `my_map`
Avoid double underscores `__`.
Avoid identifier names that contain double underscores `__` or that start with an underscore followed by a capital letter (e.g., `_Throws`).
Such identifiers are reserved for the C++ implementation.
##### Example