Phone Book
Create a phone book HashMap with these contacts:
"Alice"has number"555-1234""Bob"has number"555-5678""Carol"has number"555-9999"
Look up "Bob" and print his number.
Expected output:
text
Bob: 555-5678
Hints:
- Use
.get("Bob")to look up the number - Use
if let Some(number) = ...to unwrap the result - Print in the format
"Bob: {number}"
rust
fn main() {
}