Re: [boost] Re: logging lib, v1.3

From: John Torjo (john.lists_at_[hidden])
Date: 2004-11-05 12:32:52

> Just a quick thought that came to my mind...
> 
> Did you consider using the syntax 'BOOST_LOG(dbg, "message" << foobar);' 
> instead of 'BOOST_LOG(dbg) << "message" << foobar;'?
> 
> While I think the syntax you use looks far nicer, we ususally need the 
> ability to be able to compile away the logging calls completely and this 
> only can be done with the first form.
> 

In practice, you seldom need to turn them off completely.
A possibility to enable/disable them at runtime will be usually desired.
This is what BOOST_LOG does (see the rest of the thread).

It is equivalent to:

if ( is_enabled(log)) log << whatever << you_wish;

As a side-note, you can always redefine
// similar to
#define BOOST_LOG(x) if (false) x

which will remove all log calls (probaly in release mode).

Best,
John

-- 
John Torjo,    Contributing editor, C/C++ Users Journal
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