The //* /*/ //*/ comment toggle trick (Example)

Abstraction: Comment syntax trick to toggle code blocks without deleting them

Key points:

• Trick uses //, //, and //*/ to create a block that can be toggled by adding or removing a single /
• Works in C, C++, Java, JavaScript, and other languages supporting both // and / / comment styles
• Limitation: fails in C/C++ if the toggled code itself contains block comments (/ ... /), causing unintended behavior
• Safer C/C++ alternative: #if 1 ... #else ... #endif preprocessor directive, which supports nested comments
• Preprocessor approach requires changing only 1 to 0 to toggle, with no embedded comment restrictions

Connections: Code Commenting · Preprocessor Directives

Source: https://coderwall.com/p/zbc2zw