├── Cargo.toml
├── Cargo.lock
└── src
    └── main.rs


/Cargo.toml:
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1 | [package]
2 | name = "sandbox-rust-blanket-implementations"
3 | version = "0.1.0"
4 | edition = "2021"
5 | 
6 | [dependencies]
7 | 


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/Cargo.lock:
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1 | # This file is automatically @generated by Cargo.
2 | # It is not intended for manual editing.
3 | version = 3
4 | 
5 | [[package]]
6 | name = "sandbox-rust-blanket-implementations"
7 | version = "0.1.0"
8 | 


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/src/main.rs:
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 1 | 
 2 | 
 3 | 
 4 | 
 5 | fn main() {
 6 |     let some_str = "i am going to shout";
 7 |     let shout = some_str.shout();
 8 |     let some_string = String::from("i also shout");
 9 |     let shout2 = some_string.shout();
10 |     println!("{} - {}", shout, shout2);
11 | }
12 | 
13 | // we deine a trait we will use to "extend" the &str and String types
14 | pub trait SomeExtension {
15 |     fn shout(&self) -> String;
16 | 
17 | }
18 | 
19 | 
20 | // here, take our extension and implement it on any type which can be references as a str
21 | impl<T> SomeExtension for T
22 | where
23 |     T: AsRef<str>,
24 | {
25 |     fn shout(&self) -> String {
26 |         let s = self.as_ref();
27 |         format!("{}!", s.to_uppercase())
28 |     }
29 | }
30 | 


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