Why some function are class-less?

[Jesse Phillips via Digitalmars-d-learn]

On Thursday, 17 November 2016 at 17:54:23 UTC, Suliman wrote:
> Ok, but when the logger class may be more helpful that function 
> usage?

You'd use the logger class when you need to make customizations 
or have multiple logging schemes.

I'd expect Vibe.d allows you to override the global logging 
object. You could then inherit from the Logger class, customize 
the behavior and assign it to the global logger which is used by 
all the libraries which just call the log() function.