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-rw-r--r--contributing.md14
1 files changed, 14 insertions, 0 deletions
diff --git a/contributing.md b/contributing.md
index 8799057..a80f2b4 100644
--- a/contributing.md
+++ b/contributing.md
@@ -652,6 +652,20 @@ that you can click on to open them.
bool bar = 0;
```
</td></tr></table></details>
+- <details><summary>
+ The reason for <code>friend</code> relations are documented
+ </summary><table><tr><th>Good</th><th>Bad</th></tr><tr><td>
+
+ ```cpp
+ //! ComponentManager calls the private constructor of this class
+ friend class ComponentManager;
+ ```
+ </td><td>
+
+ ```cpp
+ friend class ComponentManager;
+ ```
+ </td></tr></table></details>
## CMakeLists-specific