On 25/08/2011 02:41, Michel Fortin wrote:
<snip>
bool frontEquals(R, V)(R range, V value)
{
if (range.empty)
return false;
else
return range.front == value;
}
This will work fine with most ranges, but if you encounter an infinite range
(with empty
defined as "enum empty = false") then the "return false" statement becomes
unreachable and
you'll get an error/warning? It doesn't make sense.
<snip>
The structure of a flowchart is not affected by the values of variables, or even
constants, in it.
_____________
( frontEquals )
¯¯¯¯¯¯|¯¯¯¯¯¯
______________ ______v______
( return false )<--- true ---< range.empty >
¯¯¯¯¯¯¯¯¯¯¯¯¯¯ ¯¯¯¯¯¯|¯¯¯¯¯¯
false
|
______________v______________
( return range.front == value )
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
Replacing "range.empty" with "false" doesn't magically cause the true arrow to
vanish.
Stewart.
