Re: Best practices of meta-programming

[Araq]

You probably said it already, but this idiom served me well:
    
    
    macro m() =
      ...
      when defined(nimDumpM):
        echo repr result
    
    
    Run

Other random notes:

  * don't turn Nim into C with `converter toBool(x: int): bool`
  * Don't overload macros/templates that use `untyped` parameters.
  * Write the macro transformation carefully. Ensure that the `lineinfo` in the 
nodes remains useful.
  * Check the error messages that resulted from misuse of your macro.