From 879f0cd5c69b8b0bf93da036d31334f9757bf6a3 Mon Sep 17 00:00:00 2001 From: mo8it Date: Sat, 22 Jun 2024 12:51:21 +0200 Subject: strings4 solution --- solutions/09_strings/strings4.rs | 39 ++++++++++++++++++++++++++++++++++++++- 1 file changed, 38 insertions(+), 1 deletion(-) (limited to 'solutions') diff --git a/solutions/09_strings/strings4.rs b/solutions/09_strings/strings4.rs index 4e18198..9dc6917 100644 --- a/solutions/09_strings/strings4.rs +++ b/solutions/09_strings/strings4.rs @@ -1 +1,38 @@ -// Solutions will be available before the stable release. Thank you for testing the beta version 🥰 +fn string_slice(arg: &str) { + println!("{arg}"); +} +fn string(arg: String) { + println!("{arg}"); +} + +fn main() { + string_slice("blue"); + + string("red".to_string()); + + string(String::from("hi")); + + string("rust is fun!".to_owned()); + + // Here, both answers work. + // `.into()` converts a type into an expected type. + // If it is called where `String` is expected, it will convert `&str` to `String`. + // But if is called where `&str` is expected, then `&str` is kept `&str` since no + // conversion is needed. + string("nice weather".into()); + string_slice("nice weather".into()); + // ^^^^^^^ the compiler recommends removing the `.into()` + // call because it is a useless conversion. + + string(format!("Interpolation {}", "Station")); + + // WARNING: This is byte indexing, not character indexing. + // Character indexing can be done using `s.chars().nth(INDEX)`. + string_slice(&String::from("abc")[0..1]); + + string_slice(" hello there ".trim()); + + string("Happy Monday!".replace("Mon", "Tues")); + + string("mY sHiFt KeY iS sTiCkY".to_lowercase()); +} -- cgit v1.2.3