Struct polkadot_node_network_protocol::View
source · pub struct View {
pub finalized_number: BlockNumber,
/* private fields */
}
Expand description
A succinct representation of a peer’s view. This consists of a bounded amount of chain heads and the highest known finalized block number.
Up to N
(5?) chain heads.
Fields§
§finalized_number: BlockNumber
The highest known finalized block number.
Implementations§
source§impl View
impl View
sourcepub fn new(
heads: impl IntoIterator<Item = Hash>,
finalized_number: BlockNumber,
) -> Self
pub fn new( heads: impl IntoIterator<Item = Hash>, finalized_number: BlockNumber, ) -> Self
Construct a new view based on heads and a finalized block number.
sourcepub fn with_finalized(finalized_number: BlockNumber) -> Self
pub fn with_finalized(finalized_number: BlockNumber) -> Self
Start with no heads, but only a finalized block number.
sourcepub fn replace_difference(&mut self, new: View) -> impl Iterator<Item = &Hash>
pub fn replace_difference(&mut self, new: View) -> impl Iterator<Item = &Hash>
Replace self
with new
.
Returns an iterator that will yield all elements of new
that were not part of self
.
sourcepub fn difference<'a>(
&'a self,
other: &'a View,
) -> impl Iterator<Item = &'a Hash> + 'a
pub fn difference<'a>( &'a self, other: &'a View, ) -> impl Iterator<Item = &'a Hash> + 'a
Returns an iterator of the hashes present in Self
but not in other
.
sourcepub fn intersection<'a>(
&'a self,
other: &'a View,
) -> impl Iterator<Item = &'a Hash> + 'a
pub fn intersection<'a>( &'a self, other: &'a View, ) -> impl Iterator<Item = &'a Hash> + 'a
An iterator containing hashes present in both Self
and in other
.
sourcepub fn check_heads_eq(&self, other: &Self) -> bool
pub fn check_heads_eq(&self, other: &Self) -> bool
Check if two views have the same heads.
Equivalent to the PartialEq
function,
but ignores the finalized_number
field.
Trait Implementations§
source§impl Decode for View
impl Decode for View
source§fn decode<__CodecInputEdqy: Input>(
__codec_input_edqy: &mut __CodecInputEdqy,
) -> Result<Self, Error>
fn decode<__CodecInputEdqy: Input>( __codec_input_edqy: &mut __CodecInputEdqy, ) -> Result<Self, Error>
Attempt to deserialise the value from input.
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input: &mut I,
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fn decode_into<I>(
input: &mut I,
dst: &mut MaybeUninit<Self>,
) -> Result<DecodeFinished, Error>where
I: Input,
Attempt to deserialize the value from input into a pre-allocated piece of memory. Read more
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I: Input,
fn skip<I>(input: &mut I) -> Result<(), Error>where
I: Input,
Attempt to skip the encoded value from input. Read more
§fn encoded_fixed_size() -> Option<usize>
fn encoded_fixed_size() -> Option<usize>
Returns the fixed encoded size of the type. Read more
source§impl Encode for View
impl Encode for View
source§fn size_hint(&self) -> usize
fn size_hint(&self) -> usize
If possible give a hint of expected size of the encoding. Read more
source§fn encode_to<__CodecOutputEdqy: Output + ?Sized>(
&self,
__codec_dest_edqy: &mut __CodecOutputEdqy,
)
fn encode_to<__CodecOutputEdqy: Output + ?Sized>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy, )
Convert self to a slice and append it to the destination.
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fn using_encoded<R, F>(&self, f: F) -> R
Convert self to a slice and then invoke the given closure with it.
§fn encoded_size(&self) -> usize
fn encoded_size(&self) -> usize
Calculates the encoded size. Read more
source§impl PartialEq for View
impl PartialEq for View
impl EncodeLike for View
impl Eq for View
impl StructuralPartialEq for View
Auto Trait Implementations§
impl Freeze for View
impl RefUnwindSafe for View
impl Send for View
impl Sync for View
impl Unpin for View
impl UnwindSafe for View
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T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
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impl<T> CloneToUninit for Twhere
T: Clone,
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