On 7/10/12 11:11 AM, Christophe Travert wrote:
If you do not want the heap allocation of the array, you can create a
one-element range to feed to chain (maybe such a thing could be placed
in phobos, next to takeOne).
struct OneElementRange(E)
{
E elem;
bool passed;
@property ref E front() { return elem; }
void popFront() { passed = true; }
@property bool empty() { return passed; }
@property size_t length() { return 1-passed; }
//...
}
Yah, probably we should add something like this:
auto singletonRange(E)(E value)
{
return repeat(value).takeExactly(1);
}
I don't think it would be considerably less efficient than a handwritten
specialization. But then I've been wrong before in assessing efficiency.
Andrei
