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import json
struct User {
name string
age int
mut:
is_registered bool
}
fn main() {
s := '[{ "name":"Frodo", "age":25}, {"name":"Bobby", "age":10}]'
mut users := json.decode([]User, s) or {
eprintln('Failed to parse json')
return
}
for user in users {
println('$user.name: $user.age')
}
println('')
for i, user in users {
println('$i) $user.name')
if !user.can_register() {
println('Cannot register $user.name, they are too young')
} else {
users[i].register()
println('$user.name is registered')
}
}
// Let's encode users again just for fun
println('')
println(json.encode(users))
}
fn (u User) can_register() bool {
return u.age >= 16
}
fn (mut u User) register() {
u.is_registered = true
}
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