Re: Iterate/sort associative array by value?

[Julian via Digitalmars-d-learn]

On Monday, 8 April 2019 at 07:53:23 UTC, Robert M. Münch wrote:
On 2019-04-07 19:28:02 +0000, Dennis said:
Did you import it? import std.algorithm;

:-/ of course not...

Why does DMD not give a hint, that an import from the standard 
lib might be missing?

It does do this, so the question should be: why aren't its 
warnings
more extensive?

Example:

  void main() {
      writeln("Hello, world!");
  }

Fails to compile with this error:

  ./missing.d(4): Error: writeln is not defined, perhaps import 
std.stdio; is needed?

That seems to come from src/dmd/expressionsem.d , which uses 
importHint from
src/dmd/imphint.d , which just has this list:

  shared static this()
  {
      // in alphabetic order
      hints = [
          "calloc": "core.stdc.stdlib",
          "cos": "std.math",
          "fabs": "std.math",
          "free": "core.stdc.stdlib",
          "malloc": "core.stdc.stdlib",
          "printf": "core.stdc.stdio",
          "realloc": "core.stdc.stdlib",
          "sin": "std.math",
          "sqrt": "std.math",
          "writefln": "std.stdio",
          "writeln": "std.stdio",
          "__va_argsave_t": "core.stdc.stdarg",
          "__va_list_tag": "core.stdc.stdarg",
      ];
  }