blob: 473072636ddefc43e2ef7e443f11db952731d8f2 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
// Calls of this function should be replaced with calls of `string_slice` or `string`.
fn placeholder() {}
fn string_slice(arg: &str) {
println!("{arg}");
}
fn string(arg: String) {
println!("{arg}");
}
// TODO: Here are a bunch of values - some are `String`, some are `&str`.
// Your task is to replace `placeholder(…)` with either `string_slice(…)`
// or `string(…)` depending on what you think each value is.
fn main() {
placeholder("blue");
placeholder("red".to_string());
placeholder(String::from("hi"));
placeholder("rust is fun!".to_owned());
placeholder("nice weather".into());
placeholder(format!("Interpolation {}", "Station"));
// WARNING: This is byte indexing, not character indexing.
// Character indexing can be done using `s.chars().nth(INDEX)`.
placeholder(&String::from("abc")[0..1]);
placeholder(" hello there ".trim());
placeholder("Happy Monday!".replace("Mon", "Tues"));
placeholder("mY sHiFt KeY iS sTiCkY".to_lowercase());
}
|
