How do I do this?

[Adam D. Ruppe via Digitalmars-d]

On Thursday, 3 August 2017 at 10:46:06 UTC, Shachar Shemesh wrote:
> I seem to remember that D had an option of importing an 
> external file as something (string? code? anything would do for 
> my purposes). I cannot seem to find it, however. A search for 
> "string import" and "import mixin" brought back nothing useful.

import("path/to/file") takes a file's contents as a string and 
you can mixin it. Needs -Jbase/path passed to dmd.


But he way I'd do this is to actually write two files for the 
same module:


old_log.d

module logging;
// declarations


new_log.d

module logging;
// declarations



Then when you compile, do `dmd mainmodule.d old_log.d` to use the 
old one and `dmd mainmodule.d new_log.d` to use the new one. In 
mainmodule, you `import logging;` and the file passed on the 
command line is the one it will refer to.

Though, if you have a complex build this might be trickier.