[−][src]Trait serde_json::value::Index
A type that can be used to index into a serde_json::Value.
The get and get_mut methods of Value accept any type that
implements Index, as does the square-bracket indexing operator. This
trait is implemented for strings which are used as the index into a JSON
map, and for usize which is used as the index into a JSON array.
This trait is sealed and cannot be implemented for types outside of
serde_json.
Examples
# use serde_json::json;
#
let data = json!({ "inner": [1, 2, 3] });
// Data is a JSON map so it can be indexed with a string.
let inner = &data["inner"];
// Inner is a JSON array so it can be indexed with an integer.
let first = &inner[0];
assert_eq!(first, 1);
Implementations on Foreign Types
impl Index for usize[src]
fn index_into<'v>(&self, v: &'v Value) -> Option<&'v Value>[src]
fn index_into_mut<'v>(&self, v: &'v mut Value) -> Option<&'v mut Value>[src]
fn index_or_insert<'v>(&self, v: &'v mut Value) -> &'v mut Value[src]
impl Index for str[src]
fn index_into<'v>(&self, v: &'v Value) -> Option<&'v Value>[src]
fn index_into_mut<'v>(&self, v: &'v mut Value) -> Option<&'v mut Value>[src]
fn index_or_insert<'v>(&self, v: &'v mut Value) -> &'v mut Value[src]
impl Index for String[src]
fn index_into<'v>(&self, v: &'v Value) -> Option<&'v Value>[src]
fn index_into_mut<'v>(&self, v: &'v mut Value) -> Option<&'v mut Value>[src]
fn index_or_insert<'v>(&self, v: &'v mut Value) -> &'v mut Value[src]
impl<'a, T: ?Sized> Index for &'a T where
T: Index, [src]
T: Index,