Re: [boost] [log] Status (was: Is there any interest in a Group of library like to Application System!)

Subject: Re: [boost] [log] Status (was: Is there any interest in a Group of library like to Application System!)
From: Andrey Semashev (andrey.semashev_at_[hidden])
Date: 2012-01-05 06:16:27

On Thursday, January 05, 2012 20:35:43 Arash Partow wrote:
> 
> As for c++11 udsl, basically one can define a suffix for a particular type
> of string, and a corresponding handler operator, which takes a pointer to
> the literal and a size (length) value - which is determined at
> compile-time, hence no need for internal calls to strnlen (multipasses) or
> inefficient loops of pushing 1 char at-a-time to a stream(file, stdout
> etc..).  [section 3.4]
> http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2378.pdf

After reading the standard and a few code samples on the net, this looks like 
an interesting but somewhat dangerous feature. There seem to be no way to 
specify a namespace for the literal operator, so name clashes are most 
possible. I could introduce a suffix operator to automatically convert a 
string literal to a basic_string_literal object, but would that be 
significantly better than traditional generator functions?

  string_literal s1 = "abcd"s;

vs

  string_literal s2 = str_literal("abcd");

Note that in the latter case I can specify namespace for the str_literal 
function while in the former case it's not possible.