diff options
| -rw-r--r-- | llvm/docs/CodingStandards.rst | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/llvm/docs/CodingStandards.rst b/llvm/docs/CodingStandards.rst index a762bf358e3..f9685d69ad5 100644 --- a/llvm/docs/CodingStandards.rst +++ b/llvm/docs/CodingStandards.rst @@ -747,7 +747,7 @@ is a copy. Particularly in range-based ``for`` loops, careless copies are expensive. As a rule of thumb, use ``const auto &`` unless you need to mutate or copy the -result. +result, and use ``const auto *`` when copying pointers. .. code-block:: c++ @@ -760,6 +760,10 @@ result. // Remove the reference if you really want a new copy. for (auto Val : Container) { Val.change(); saveSomewhere(Val); } + // Copy pointers, but make it clear that they're pointers. + for (const auto *Val : Container) { observe(*Val); } + for (auto *Val : Container) { Val->change(); } + Style Issues ============ |
