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-rw-r--r--doc/developer-notes.md26
1 files changed, 26 insertions, 0 deletions
diff --git a/doc/developer-notes.md b/doc/developer-notes.md
index 70c0690ba3..b0794e6d30 100644
--- a/doc/developer-notes.md
+++ b/doc/developer-notes.md
@@ -331,6 +331,32 @@ Strings and formatting
- *Rationale*: Bitcoin Core uses tinyformat, which is type safe. Leave them out to avoid confusion
+Variable names
+--------------
+
+The shadowing warning (`-Wshadow`) is enabled by default. It prevents issues rising
+from using a different variable with the same name.
+
+Please name variables so that their names do not shadow variables defined in the source code.
+
+E.g. in member initializers, prepend `_` to the argument name shadowing the
+member name:
+
+```c++
+class AddressBookPage
+{
+ Mode mode;
+}
+
+AddressBookPage::AddressBookPage(Mode _mode) :
+ mode(_mode)
+...
+```
+
+When using nested cycles, do not name the inner cycle variable the same as in
+upper cycle etc.
+
+
Threads and synchronization
----------------------------