4 ms·

const pretty much does nothing to allow optimization in C/C++ :(

• jcelerier 4y ago
  It definitely does for globals
  • tsimionescu 4y ago
    I think in general it does something for symbols visible outside the compilation unit (globals, public fields). Otherwise, the compiler usually has enough information to decide if something is actually a constant regardless of the const modifier.
    • heinrich5991 4y ago
      `const` only does something for (global, static, local) variable declarations. The rest is just guidance to for the programmer. It doesn't do anything on pointers, and I think it doesn't do anything on members, but not entirely sure on the last one.