}
}
+fn else_if_option(string: Option<&str>) -> Option<(bool, &str)> {
+ if string.is_none() {
+ None
+ } else if let Some(x) = string {
+ Some((true, x))
+ } else {
+ Some((false, ""))
+ }
+}
+
+fn unop_bad(string: &Option<&str>, mut num: Option<i32>) {
+ let _ = if let Some(s) = *string { s.len() } else { 0 };
+ let _ = if let Some(s) = &num { s } else { &0 };
+ let _ = if let Some(s) = &mut num {
+ *s += 1;
+ s
+ } else {
+ &mut 0
+ };
+ let _ = if let Some(ref s) = num { s } else { &0 };
+ let _ = if let Some(mut s) = num {
+ s += 1;
+ s
+ } else {
+ 0
+ };
+ let _ = if let Some(ref mut s) = num {
+ *s += 1;
+ s
+ } else {
+ &mut 0
+ };
+}
+
fn longer_body(arg: Option<u32>) -> u32 {
if let Some(x) = arg {
let y = x * x;
let optional = Some(5);
let _ = if let Some(x) = optional { x + 2 } else { 5 };
let _ = bad1(None);
+ let _ = else_if_option(None);
+ unop_bad(&None, None);
let _ = longer_body(None);
test_map_or_else(None);
let _ = negative_tests(None);