diff options
Diffstat (limited to 'meap/meap-code/ch3/ch3-newtype-pattern.rs')
-rw-r--r-- | meap/meap-code/ch3/ch3-newtype-pattern.rs | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/meap/meap-code/ch3/ch3-newtype-pattern.rs b/meap/meap-code/ch3/ch3-newtype-pattern.rs new file mode 100644 index 0000000..9647b27 --- /dev/null +++ b/meap/meap-code/ch3/ch3-newtype-pattern.rs @@ -0,0 +1,10 @@ +#[derive(PartialEq)] // <1>
+struct Hostname(String); // <2>
+
+fn main() {
+ let ordinary_string = String::from("localhost");
+ let host = Hostname ( ordinary_string.clone() );
+ if host == ordinary_string { // <3>
+ println!("huh?");
+ };
+}
\ No newline at end of file |