Trait FromJson

Source

pub trait FromJson: for<'a> Deserialize<'a> {
    // Provided methods
    fn from_json_file<P: AsRef<Path>>(path: P) -> Result<Self> { ... }
    fn from_json_reader<R: Read>(reader: R) -> Result<Self> { ... }
    fn from_json_str(json: &str) -> Result<Self> { ... }
    fn from_json_slice(json: &[u8]) -> Result<Self> { ... }
}

Expand description

This trait allows to convert JSON objects to deserializable values.

§Examples

extern crate serde;
#[macro_use]
extern crate serde_derive;
extern crate serdeconv;

use serdeconv::FromJson;

// Defines a deserializable struct.
#[derive(Deserialize)]
struct Foo {
    bar: String,
    baz: usize
}
impl FromJson for Foo {}

// Converts from the JSON string to a `Foo` value.
let json = r#"{
    "bar": "aaa",
    "baz": 123
}"#;
let foo = Foo::from_json_str(json).unwrap();
assert_eq!(foo.bar, "aaa");
assert_eq!(foo.baz, 123);