Trait serde::de::SeqAccess[][src]

pub trait SeqAccess<'de> {
    type Error: Error;
    fn next_element_seed<T>(
        &mut self,
        seed: T
    ) -> Result<Option<T::Value>, Self::Error>
    where
        T: DeserializeSeed<'de>
; fn next_element<T>(&mut self) -> Result<Option<T>, Self::Error>
    where
        T: Deserialize<'de>
, { ... }
fn size_hint(&self) -> Option<usize> { ... } }
Expand description

Provides a Visitor access to each element of a sequence in the input.

This is a trait that a Deserializer passes to a Visitor implementation, which deserializes each item in a sequence.

Lifetime

The 'de lifetime of this trait is the lifetime of data that may be borrowed by deserialized sequence elements. See the page Understanding deserializer lifetimes for a more detailed explanation of these lifetimes.

Example implementation

The example data format presented on the website demonstrates an implementation of SeqAccess for a basic JSON data format.

Associated Types

The error type that can be returned if some error occurs during deserialization.

Required methods

This returns Ok(Some(value)) for the next value in the sequence, or Ok(None) if there are no more remaining items.

Deserialize implementations should typically use SeqAccess::next_element instead.

Provided methods

This returns Ok(Some(value)) for the next value in the sequence, or Ok(None) if there are no more remaining items.

This method exists as a convenience for Deserialize implementations. SeqAccess implementations should not override the default behavior.

Returns the number of elements remaining in the sequence, if known.

Implementations on Foreign Types

Implementors