//ww:run-exit 73
package main;
type th = struct { pc: size, weight: size };
type capture = struct { content: str, start: size, end: size };
export fn main() i32 = {
	let xs: []th = [];
	append(xs, th { pc = 7, weight = 100 });
	append(xs, th { pc = 8, weight = 200 });
	let total: size = 0;
	for (let t .. xs) {
		total += t.pc;
		total += t.weight;
	};
	if (total != 315) { return 1; };
	let cs: []capture = [];
	append(cs, capture { content = "abc", start = 11, end = 13 });
	append(cs, capture { content = "wy", start = 21, end = 23 });
	let csum: size = 0;
	for (let cp .. cs) {
		csum += cp.content.len: size;
		csum += cp.start;
		csum += cp.end;
	};
	if (csum != 73) { return 2; };
	let ss: []str = [];
	append(ss, "hello");
	append(ss, "worldly");
	let slen: size = 0;
	for (let s .. ss) {
		slen += s.len: size;
	};
	if (slen != 12) { return 3; };
	return 73;
};