On Monday, 24 April 2017 at 15:22:15 UTC, Ola Fosheim Grøstad
wrote:
On Monday, 24 April 2017 at 15:03:53 UTC, Mike Parker wrote:
DIP 1007 is titled "'future symbol' Compiler Concept".
«In all the mentioned languages but D, a common convention is
to only use unqualified access for symbols in the standard
library.»
Not quite right for C++. The common convention in modern C++ is
to use full std::name qualification for the standard library.
It is common to use unqualified access for the local
namespace(s) only.
In headers. Not in source files, and I don't know why anyone
would want to keep typing `std::` all the time. Do some people do
what you're describing? Yes, but I see no evidence that that's
the common convention in modern C++. In fact, from the core
guidelines:
"
##### Example
#include<string>
#include<vector>
#include<iostream>
#include<memory>
#include<algorithm>
using namespace std;
// ...
Here (obviously), the standard library is used pervasively and
apparently no other library is used, so requiring `std::`
everywhere could be distracting."
Never mind the monstrosity that would be trying to use the C++
user-defined literal without `using namespace std`:
#include <string>
using namespace std::operator""s; // Argh! My eyes!
No thanks. I even had to look that up, and I'll probably forget
it.
