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CODING_CONVENTION.md: migrate to #pragma once

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Mikolai Gütschow 2025-04-07 11:36:11 +02:00
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CODING_CONVENTIONS.md
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@ -311,7 +311,9 @@ is considered as unused. To avoid this, one should add
## Header Guards
All files are required to have header guards of the form
All header files are required to either contain the widely supported `#pragma once`
preprocessor directive as the first line after the [copyright note](#documentation),
or header guards of the form
```c
#ifndef PATH_TO_FILE_FILENAME_H
@ -321,6 +323,9 @@ All files are required to have header guards of the form
#endif /* PATH_TO_FILE_FILENAME_H */
```
Header guards are deprecated in RIOT header files and will gradually be converted
to `#pragma once`.
Rules for generating the guard name:
1. take the file name