decode.v

import json
struct User { name string age int }
fn main(){
    mut len := 0
    C.read(0, &len, 4)
    if len > 1024 { panic('input too large') }
    mut buf := malloc(len)
    C.read(0, buf, len)
    s := string(buf, len)
    println('received s: $s')
    u := json.decode(User, s)?
    println('received user: $u')
}