jobj.iter()
    .map(|name, x| {
        let jbook_parse = |x| {
            let entry_parse = |x| -> Option<[f32; 3]> {
                if let Value::Array(x) = x.as_array() {
                    let a = x.next();
                    let b = x.next();
                    let c = x.next();
                    match (a, b, c) {
                        (Some(a), Some(b), Some(c)) => Some([a, b, c]),
                        _ => None
                    }
                }
            };
            x.as_array()
                .filter_map(|x| x)
                .iter()
                .map(|x| entry_parse(x))
                .filter_map(|x| x)
        }
        Orderbook {
            name : name
            ask : jbook_parse(x, "ask").collect(),
            bid : jbook_parse(y, "bid").collect(),
        }
    })