pub struct ChildNumber(pub u32);
Expand description

Index of a particular child key for a given (extended) private key.

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§0: u32

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impl ChildNumber

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pub const BYTE_SIZE: usize = 4usize

Size of a child number when encoded as bytes.

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pub const HARDENED_FLAG: u32 = 2_147_483_648u32

Hardened child keys use indices 2^31 through 2^32-1.

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pub fn new(index: u32, hardened: bool) -> Result<Self>

Create new ChildNumber with the given index and hardened flag.

Returns an error if it is equal to or greater than Self::HARDENED_FLAG.

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pub fn from_bytes(bytes: [u8; 4]) -> Self

Parse a child number from the byte encoding.

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pub fn to_bytes(self) -> [u8; 4]

Serialize this child number as bytes.

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pub fn index(self) -> u32

Get the index number for this ChildNumber, i.e. with Self::HARDENED_FLAG cleared.

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pub fn is_hardened(&self) -> bool

Is this child number within the hardened range?

Trait Implementations§

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impl BorshDeserialize for ChildNumber

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fn deserialize(buf: &mut &[u8]) -> Result<Self, Error>

Deserializes this instance from a given slice of bytes. Updates the buffer to point at the remaining bytes.
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fn try_from_slice(v: &[u8]) -> Result<Self, Error>

Deserialize this instance from a slice of bytes.
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impl BorshSerialize for ChildNumber

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fn serialize<W: Write>(&self, writer: &mut W) -> Result<(), Error>

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fn try_to_vec(&self) -> Result<Vec<u8>, Error>

Serialize this instance into a vector of bytes.
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impl Clone for ChildNumber

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fn clone(&self) -> ChildNumber

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for ChildNumber

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for ChildNumber

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fn default() -> ChildNumber

Returns the “default value” for a type. Read more
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impl Display for ChildNumber

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Extend<ChildNumber> for DerivationPath

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fn extend<T>(&mut self, iter: T)
where T: IntoIterator<Item = ChildNumber>,

Extends a collection with the contents of an iterator. Read more
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fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)
Extends a collection with exactly one element.
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fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)
Reserves capacity in a collection for the given number of additional elements. Read more
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impl From<ChildNumber> for u32

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fn from(n: ChildNumber) -> u32

Converts to this type from the input type.
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impl From<u32> for ChildNumber

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fn from(n: u32) -> ChildNumber

Converts to this type from the input type.
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impl FromStr for ChildNumber

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type Err = Error

The associated error which can be returned from parsing.
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fn from_str(child: &str) -> Result<ChildNumber>

Parses a string s to return a value of this type. Read more
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impl Ord for ChildNumber

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fn cmp(&self, other: &ChildNumber) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
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impl PartialEq for ChildNumber

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fn eq(&self, other: &ChildNumber) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialOrd for ChildNumber

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fn partial_cmp(&self, other: &ChildNumber) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl Copy for ChildNumber

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impl Eq for ChildNumber

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impl StructuralEq for ChildNumber

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impl StructuralPartialEq for ChildNumber

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impl<T> Any for T
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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Any for T
where T: Any,

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fn into_any(self: Box<T>) -> Box<dyn Any>

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fn type_name(&self) -> &'static str

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where T: Any + Send + Sync,

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fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send>

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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type Error = <U as TryFrom<T>>::Error

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Performs the conversion.
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