yield

1 import std.range;
2 
3 InputRange!int myIota = iota(10).inputRangeObject;
4 
5 myIota.popFront();
6 myIota.popFront();
7 assert(myIota.moveFront == 2);
8 assert(myIota.front == 2);
9 myIota.popFront();
10 assert(myIota.front == 3);
11 
12 //can be assigned to std.range.interfaces.InputRange directly
13 myIota = new Generator!int(
14 {
15     foreach (i; 0 .. 10) yield(i);
16 });
17 
18 myIota.popFront();
19 myIota.popFront();
20 assert(myIota.moveFront == 2);
21 assert(myIota.front == 2);
22 myIota.popFront();
23 assert(myIota.front == 3);
24 
25 size_t[2] counter = [0, 0];
26 foreach (i, unused; myIota) counter[] += [1, i];
27 
28 assert(myIota.empty);
29 assert(counter == [7, 21]);