HotVars

Struct HotVars 

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struct HotVars {
    slots: [f64; 26],
    slots_value: [Value; 26],
}
Expand description

Array-backed scratch slots. The bytecode VM addresses these by index (one f64 array load per access — no enum-tag match). The parallel HotVars::slots_value array backs evalexpr’s Context::get_value(name) -> Option<&Value> contract and is kept in sync with the f64 array on every write.

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§slots: [f64; 26]§slots_value: [Value; 26]

Mirror of slots as Value. Only read on the (rare) cold path when evalexpr’s Context::get_value resolves a hot identifier.

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impl HotVars

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fn slot(&self, name: &str) -> Option<&Value>

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fn set_by_name(&mut self, name: &str, value: f64) -> bool

Set a hot slot by name. Returns false when name isn’t a hot variable. On a successful set, both the f64 array (VM fast path) and the Value mirror (evalexpr API contract) are updated.

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impl Clone for HotVars

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fn clone(&self) -> HotVars

Returns a duplicate 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 HotVars

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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 HotVars

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fn default() -> Self

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

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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> 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.