//ww:run-exit 10
// Migrated from 700_e2e row 100.
package main;
import strings;
fn pick(r: (i32 | void), miss: i32) i32 = {
  match (r) {
  case let i: i32 => return i;
  case void => return miss;
  };
  return 0;
};
fn main() i32 = {
  let s: str = "hello, world";
  let i1: i32 = pick(strings.byteindex(s, ','), -1);
  let i2: i32 = pick(strings.byteindex(s, 'z'), -1);
  let i3: i32 = pick(strings.byteindex(s, "world"), -1);
  let i4: i32 = pick(strings.byteindex(s, "nope"), -1);
  return i1 + i2 + i3 + i4;
};