switch()-like statement whose cases are string literals and integrals
#Samples
int i = 1;
const char *r = switch_<const char*>(i)
.case_(0, "0")
.case_(1, "1")
.case_(2, "2")
.default_("undefined")
;
assert(!std::strcmp(r, "1"));struct point {int x,y;
point(int x, int y)
:x(x)
,y(y)
{}
bool operator==(const point &r) const {
return x == r.x && y == r.y;
}
};
int i = 1;
const point r = switch_<point>(i)
.case_(2, {100, 200})
.case_(3, {200, 200})
.default_({300, 300})
;
assert(r.x == 200 && r.y == 200);std::string k = "3";
const point r = switch_<point>(k)
.case_("2", {100, 200})
.case_("3", {200, 200})
.default_({300, 300})
;
assert(r.x == 200 && r.y == 200);int i = 1;
const int r = switch_<int>(i)
.case_(0, [](){return 0;})
.case_(1, [](){return 1;})
.case_(2, [](){return 2;})
.default_([](){return 3;})
;
assert(r == 1);