Implementing std.log

[so]

On Thu, 21 Apr 2011 15:37:42 +0300, Denis Koroskin <2korden at gmail.com>  
wrote:

> On Thu, 21 Apr 2011 01:34:29 +0400, so <so at so.com> wrote:
>
>>> For me, Logger needs to be simple but feature complete. Here is my  
>>> ideal syntax:
>>>
>>> Logger log = new Logger();
>>> log.warn("bewarned");
>>> log.error("error code: %d", 42);
>>> log.fatal("Derp");
>>
>> Fine if you remove the first line, switching the output is something we  
>> rarely do, so we shouldn't mandate this for each use.
>>
>> note("just a note :", 5);
>> note!warn("bewarned");
>> note!error(c, ", ", d);
>
> Having different loggers for different parts of programs (e.g. separate  
> logger for my rendering, separate one for audio, separate for physics,  
> and so on) is a must for me.
> Because when you debug your code by analyzing log output, you want to be  
> able to filter out non-relevant stuff. If you only have ONE logger, you  
> will start adding stupid prefixes like this:
>
> error("GAME/GAMEMODE_CHALLENGE/OBJECTIVE_CHECKER: match data frame is  
> not valid");
>
> instead of
>
> log.error("match data frame is not valid");

So you want the iostream way, global logger objects, otherwise i don't see  
how this solves the problem you are suggesting.