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PrefixedString

Struct PrefixedString 

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pub struct PrefixedString(pub String);
Expand description

A UTF-8 string prefixed by its byte length as a VarInt.

The protocol limits both the UTF-8 payload size and the number of UTF-16 code units. Supplementary Unicode scalar values count as two UTF-16 code units. The general protocol limit is 32,767 UTF-16 code units and three UTF-8 bytes per permitted code unit; a particular field may impose a lower limit.

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§0: String

The string value.

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impl PrefixedString

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pub const MAX_UTF16_CODE_UNITS: usize = 0x7fff

The maximum number of UTF-16 code units permitted in the string.

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pub const MAX_BYTES: usize

The maximum size of the UTF-8 payload, excluding its VarInt length prefix.

Trait Implementations§

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impl Clone for PrefixedString

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fn clone(&self) -> PrefixedString

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

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

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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 PrefixedString

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fn default() -> PrefixedString

Returns the “default value” for a type. Read more
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impl Eq for PrefixedString

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impl Hash for PrefixedString

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for PrefixedString

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl StructuralPartialEq for PrefixedString

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impl TypeCodec for PrefixedString

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fn encode(&self, writer: &mut impl Write) -> Result<(), CodecError>

Encodes this value to the writer.
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fn decode(reader: &mut impl Read) -> Result<Self, CodecError>

Decodes this value from the reader.

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

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

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> ContextualCodec for T
where T: TypeCodec,

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fn encode_with_context( &self, writer: &mut impl Write, _context: &Context, ) -> Result<(), CodecError>

Encodes this value using context supplied by its enclosing structure.
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fn decode_with_context( reader: &mut impl Read, _context: &Context, ) -> Result<T, CodecError>
where T: Sized,

Decodes this value using context supplied by its enclosing structure.
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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, U> Into<U> for T
where U: From<T>,

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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> 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, U> TryFrom<U> for T
where U: Into<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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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

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

Performs the conversion.