Maps: Reading a value
● Beginner2 min
map[key] gives an optional: the value, or none when the key isn't there.
fn main() {
const ages = ["asha": 31]
print(ages["asha"] ?? 0)
print(ages["zoe"] ?? 0)
if let age = ages["asha"] {
print("found {age}")
}
}The program ran and printed:
kavach run read.kav
310found 31