From 359bac7cff235f60c8f5abb66a861c5a7b9a2b6d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Pavel=20Jan=C3=ADk?= Date: Thu, 22 Sep 2016 16:39:25 +0200 Subject: [PATCH] Add notes about variable names and shadowing --- doc/developer-notes.md | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/doc/developer-notes.md b/doc/developer-notes.md index 70c0690ba..b0794e6d3 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 ----------------------------