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StringArena

Struct StringArena 

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pub struct StringArena { /* private fields */ }
Expand description

An arena-based allocator for interning strings.

Deduplicates strings by hash and returns lightweight StrRef handles for O(1) lookups.

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impl StringArena

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pub fn alloc(&mut self, value: &str) -> StrRef

Interns a string and returns its StrRef. Returns the existing reference if already interned.

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pub fn alloc_no_case(&mut self, value: &str) -> StrRef

Interns a string using case-insensitive hashing.

Two strings that differ only in ASCII case will resolve to the same StrRef. The original casing of the first insertion is preserved.

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pub fn get(&self, key: StrRef) -> &str

Retrieves the string associated with the given StrRef.

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pub fn eq_ignore_ascii_case(&self, ka: StrRef, kb: StrRef) -> bool

Compares two interned strings for case-insensitive ASCII equality.

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impl Default for StringArena

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fn default() -> StringArena

Returns the “default value” for a type. Read more
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impl Serialize for StringArena

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more

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> 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, 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.