29 Nov
2011
29 Nov
'11
12:43 a.m.
On 11/28/2011 6:05 PM, Dave Abrahams wrote:
on Fri Nov 18 2011, paul Fultz<pfultz2-AT-yahoo.com> wrote:
I provide a list of modifications that I could think of. What is your opinion? This is more of an addition to your list, but I think adding
the | operator for getting the optional value or a default value would be nice. For example:
optional<double> safe_sqrt(double x) { if (x< 0) return none; else return sqrt(x); }
double x = safe_sqrt(4) | 0; //x = 4 double y = safe_sqrt(-1) | 0; //y = 0
I dont know if this is possible for tr2, but would be really nice addition in the future. Especially, since a lot of times i just want a default value if the optional value doesn't exist. +1 +sqrt(4)