clang-tidy:tldr:f760a

The command clang-tidy ${filename-cpp} -checks=${-*,cppcoreguidelines-*} is used to invoke the clang-tidy tool with certain checks enabled for a specific C++ source file.

Let's break down the command:

• ${filename-cpp}: This is a placeholder syntax (likely in a shell/Makefile script) for the actual name of the C++ source file you want to analyze. It will be replaced by the real filename before executing the command.

• clang-tidy: This is the name of the clang-tidy tool, which is a static analysis tool for C++ code. It analyzes the code and provides warnings and suggestions for improvements.

• ${filename-cpp}: This is the name of the C++ source file to be analyzed. It will be replaced with the actual filename you want to analyze.

• -checks=${-*,cppcoreguidelines-*}: This part of the command specifies the checks that should be enabled for the analysis.

  • ${-*,cppcoreguidelines-*} is another placeholder that will be replaced with the actual checks before executing the command. It represents a list of checks separated by commas, which will be expanded later.

  • The -checks= option is used to enable specific checks for the analysis. By using the ${-*,cppcoreguidelines-*} placeholder, it allows you to specify a set of checks dynamically.

  • cppcoreguidelines-* is a glob-like pattern that matches all checks belonging to the cppcoreguidelines module. These checks come from the C++ Core Guidelines, which are a set of rules and recommendations for writing safer and more efficient C++ code.

  • ${-*} represents all checks. This allows you to enable all available checks for the analysis if you don't want to filter them based on specific guidelines or modules.

In summary, when you run this command with an actual C++ source file name and enable certain checks, clang-tidy will analyze the code in that file and provide warnings and suggestions based on the enabled checks.