Code Typing · Rust
Option Match
Pattern matching on Option<T>.
Difficulty: Beginner · 10 Lines · License: public-domain
fn first_char(s: &str) -> Option<char> {
s.chars().next()
}fn main() {
match first_char("rust") {
Some(c) => println!("first: {}", c),
None => println!("empty"),
}
Time0:00
Speed (WPM)0.0
Accuracy100.0%
Mistakes0
Live Keyboard
Next Key: F | Last Pressed: -
Progress: 0.0%
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