pub struct VacantEntry<'a> { /* fields omitted */ }
A vacant Entry. It is part of the Entry
enum.
Gets a reference to the key that would be used when inserting a value
through the VacantEntry.
use serde_json::map::Entry;
let mut map = serde_json::Map::new();
match map.entry("serde") {
Entry::Vacant(vacant) => {
assert_eq!(vacant.key(), &"serde");
}
Entry::Occupied(_) => unimplemented!(),
}
Sets the value of the entry with the VacantEntry's key, and returns a
mutable reference to it.
use serde_json::map::Entry;
let mut map = serde_json::Map::new();
match map.entry("serde") {
Entry::Vacant(vacant) => {
vacant.insert(json!("hoho"));
}
Entry::Occupied(_) => unimplemented!(),
}
🔬 This is a nightly-only experimental API. (try_from
)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (try_from
)
Immutably borrows from an owned value. Read more
🔬 This is a nightly-only experimental API. (get_type_id
)
this method will likely be replaced by an associated static
Mutably borrows from an owned value. Read more
🔬 This is a nightly-only experimental API. (try_from
)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (try_from
)