September 13

On Monday, 11 September 2023 at 23:47:33 UTC, H. S. Teoh wrote:


Since the type of the parameter is already known, the compiler does not need me to repeat the type name. It already knows enough to figure it out on its own. "Don't Repeat Yourself" (DRY).

I think there are 3 possibilities, leaving aside what Steven suggested. Well, since these options will generally be static, why not use a template parameter? Besides, everything can be expressed with a single letter. For example:

// Steven suggested...
void multiParams(bool silenceErrors = false, bool otherOption = true)

// (1) It cannot be customized.
auto someFunction(Options option = Options.init) => option;//*/

/*/ (2a) It doesn't run older versions:
auto someFunction(Options option = Options(silenceErrors: false)) => option;//*/

/*/ (2b) There's a possibility of confusion:
auto someFunction(Options option = Options (false, false) => option;//*/

struct Options
  bool silenceErrors = true;
  bool printDebugs = true;

  string toString() => format("silenceErrors: %s\nprintDebugs: %s", silenceErrors, printDebugs);

import std.format, std.stdio;
void main()
  auto foo(T, T option = T.init)() => option;



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