miniextendr_api::altrep_data::iter::coerce

Struct IterIntFromBoolData

pub struct IterIntFromBoolData<I>where
    I: Iterator<Item = bool>,{
    state: IterState<I, bool>,
}

Expand description

Iterator-backed integer vector data adaptor with coercion from bool.

Wraps an iterator producing bool values that coerce to i32. Useful for converting boolean iterators to integer vectors.

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§state: IterState<I, bool>

Implementations§

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impl IterIntFromBoolData
where I: Iterator<Item = bool>,

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pub fn from_iter(iter: I, len: usize) -> Self

Create from an iterator with explicit length.

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impl IterIntFromBoolData
where I: ExactSizeIterator<Item = bool>,

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pub fn from_exact_iter(iter: I) -> Self

Create from an ExactSizeIterator (length auto-detected).

Trait Implementations§

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impl AltIntegerData for IterIntFromBoolData
where I: Iterator<Item = bool>,

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fn elt(&self, i: usize) -> i32

Get the integer element at index i.

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fn as_slice(&self) -> Option<&[i32]>

Optional: return a pointer to contiguous data if available. Default returns None (no contiguous backing).

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fn get_region(&self, start: usize, len: usize, buf: &mut [i32]) -> usize

Optional: bulk read into buffer. Returns number of elements read. Read more

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fn is_sorted(&self) -> Option<Sortedness>

Optional: sortedness hint. Default is unknown.

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fn no_na(&self) -> Option<bool>

Optional: does this vector contain any NA values?

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fn sum(&self, _na_rm: bool) -> Option<i64>

Optional: optimized sum. Default returns None (use R’s default).

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fn min(&self, _na_rm: bool) -> Option<i32>

Optional: optimized min. Default returns None (use R’s default).

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fn max(&self, _na_rm: bool) -> Option<i32>

Optional: optimized max. Default returns None (use R’s default).

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impl AltrepLen for IterIntFromBoolData
where I: Iterator<Item = bool>,

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fn len(&self) -> usize

Returns the length of this ALTREP vector.

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fn is_empty(&self) -> bool

Returns true if the vector is empty.

Auto Trait Implementations§

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impl UnwindSafe for IterIntFromBoolData
where I: UnwindSafe,

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 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> SizeHint for T
where T: ?Sized,

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default fn lower_bound(&self) -> usize

🔬This is a nightly-only experimental API. (core_io_internals)

Returns a lower bound on the number of elements this container-like item contains. For example, an array [u8; 12] could return any value between 0 and 12 inclusively as a correct implementation. Read more

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default fn upper_bound(&self) -> Option<usize>

🔬This is a nightly-only experimental API. (core_io_internals)

Returns an upper bound on the number of elements this container-like item contains if it can be determined, otherwise None. Read more

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final fn size_hint(&self) -> (usize, Option<usize>)

🔬This is a nightly-only experimental API. (core_io_internals)

Returns an estimate for the number of elements this container like type contains. Read more

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