Issuing a break statement will not cause the foreach loop to exit but instead will perform another iteration before jumping out.

---
import std.stdio;

void main()
{
	int[int] test;
	test[0] = 0;
	test[1] = 1;
	
	bool flag = false;
	foreach( k, v; test){
		writefln("loop: %s %s", k, v);
		assert(!flag); // fails on second loop!
		flag = true;
		break; // should exit here after the first iteration
	}
}
---

output:

---
loop: 0 0
loop: 1 1
core.exception.AssertError@test(12): Assertion failure
---