I have a some JSON data that is returned from a web service. The JSON is a top-level array:
[
{
"data": "value1"
},
{
"data": "value2"
},
{
"data": "value3"
}
]
Using serde_derive
to make struct
s I can can deserialize the data contained within the array, however, I am unable to get Serde to deserialize the top-level array.
Am I missing something, or can Serde not deserialize top level-arrays?
You can use a Vec
:
extern crate serde;
extern crate serde_json;
#[macro_use]
extern crate serde_derive;
use serde_json::Error;
#[derive(Serialize, Deserialize, Debug)]
struct Foo {
data: String,
}
fn typed_example() -> Result<(), Error> {
let data = r#"[
{
"data": "value1"
},
{
"data": "value2"
},
{
"data": "value3"
}
]"#;
let array: Vec<Foo> = serde_json::from_str(data)?;
for elem in array.iter() {
println!("{:?}", elem);
}
Ok(())
}
fn main() {
typed_example().unwrap();
}