Oh Dear

[Walter Bright]

bearophile wrote:
> Walter Bright:
>> The result of / depends on which version of Python you're using:
>> http://www.python.org/doc/2.2.3/whatsnew/node7.html
> 
> I have used Python 2.6, and the numbers I have shown you are correct for Python 3.1 too.
> I don't like how the % behaves in C when there can be negative numbers.

According to the python pep, the integer / divide semantics changed from 
"C" style to match what the floating point / does. While this makes 
sense for a language that is typeless, it doesn't work for D because:

1. it would cause D code to silently produce different results than the 
corresponding C/C++ code. This is extremely important, as I guarantee 
that when someone new tries porting existing C code to D, and it doesn't 
work, their conclusion will not be "perhaps I should recode the / 
expression", it will be "D sux". Note that there is no way the compiler 
could issue a warning about this as it cannot determine a dependency on 
the rounding method.

2. it is slower than the current method.