From 95aaa2790a75e9e5476a53ff52d324b4201ef39b Mon Sep 17 00:00:00 2001 From: Jordan Gong Date: Thu, 13 Aug 2020 16:47:02 +0800 Subject: Introduce structs --- structure/src/main.rs | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 structure/src/main.rs (limited to 'structure/src') diff --git a/structure/src/main.rs b/structure/src/main.rs new file mode 100644 index 0000000..81df2d9 --- /dev/null +++ b/structure/src/main.rs @@ -0,0 +1,43 @@ +/* define */ +struct User { + username: String, + email: String, + sign_in_count: u64, + active: bool, +} + +/* tuple structs */ +struct Color(i32, i32, i32); +struct Point(i32, i32, i32); + +fn main() { + /* create an instance */ + let mut user1 = User { + email: String::from("someone@example.com"), + username: String::from("someusername123"), + active: true, + sign_in_count: 1, + }; + + user1.email = String::from("anotheremal@example.com"); + + /* update syntax */ + let user2 = User { + email: String::from("another@email.com"), + username: String::from("anotherusername567"), + ..user1 + }; + + let black = Color(0, 0, 0); + let origin = Point(0, 0, 0); +} + +fn build_user(email: String, username: String) -> User { + User { + email, /* field init shorthad */ + username, + active: true, + sign_in_count: 1, + } +} + -- cgit v1.2.3