Struct bytecodec::combinator::TryMapFrom
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pub struct TryMapFrom<C, T, E, F> { /* fields omitted */ }
Combinator that tries to convert items into ones that suited to the inner encoder by calling the given function.
This is created by calling EncodeExt::try_map_from
method.
Trait Implementations
impl<C: Debug, T: Debug, E: Debug, F: Debug> Debug for TryMapFrom<C, T, E, F>
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fn fmt(&self, __arg_0: &mut Formatter) -> Result
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Formats the value using the given formatter. Read more
impl<C, T, E, F> Encode for TryMapFrom<C, T, E, F> where
C: Encode,
F: Fn(T) -> Result<C::Item, E>,
Error: From<E>,
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C: Encode,
F: Fn(T) -> Result<C::Item, E>,
Error: From<E>,
type Item = T
The type of items to be encoded.
fn encode(&mut self, buf: &mut [u8], eos: Eos) -> Result<usize>
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Encodes the items in the encoder and writes the encoded bytes to the given buffer. Read more
fn start_encoding(&mut self, item: Self::Item) -> Result<()>
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Tries to start encoding the given item. Read more
fn requiring_bytes(&self) -> ByteCount
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Returns the number of bytes required to encode all the items in the encoder. Read more
fn is_idle(&self) -> bool
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Returns true
if there are no items to be encoded in the encoder, otherwise false
.
impl<C, T, E, F> ExactBytesEncode for TryMapFrom<C, T, E, F> where
C: ExactBytesEncode,
F: Fn(T) -> Result<C::Item, E>,
Error: From<E>,
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C: ExactBytesEncode,
F: Fn(T) -> Result<C::Item, E>,
Error: From<E>,
fn exact_requiring_bytes(&self) -> u64
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Returns the exact number of bytes required to encode all the items remaining in the encoder.