polars_core::frame::group_by

Struct GroupsIdx

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pub struct GroupsIdx { /* private fields */ }
Available on crate feature algorithm_group_by only.
Expand description

Indexes of the groups, the first index is stored separately. this make sorting fast.

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impl GroupsIdx

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pub fn new(first: Vec<IdxSize>, all: Vec<IdxVec>, sorted: bool) -> Self

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pub fn sort(&mut self)

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pub fn is_sorted_flag(&self) -> bool

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pub fn iter(&self) -> Zip<Copied<Iter<'_, IdxSize>>, Iter<'_, IdxVec>>

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pub fn all(&self) -> &[IdxVec]

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pub fn first(&self) -> &[IdxSize]

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pub fn first_mut(&mut self) -> &mut Vec<IdxSize>

Trait Implementations§

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impl Clone for GroupsIdx

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fn clone(&self) -> GroupsIdx

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 GroupsIdx

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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 GroupsIdx

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fn default() -> GroupsIdx

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

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fn drop(&mut self)

Executes the destructor for this type. Read more
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impl From<GroupsIdx> for GroupsProxy

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fn from(groups: GroupsIdx) -> Self

Converts to this type from the input type.
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impl From<Vec<(u32, UnitVec<u32>)>> for GroupsIdx

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fn from(v: Vec<IdxItem>) -> Self

Converts to this type from the input type.
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impl From<Vec<Vec<(u32, UnitVec<u32>)>>> for GroupsIdx

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fn from(v: Vec<Vec<IdxItem>>) -> Self

Converts to this type from the input type.
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impl FromIterator<(u32, UnitVec<u32>)> for GroupsIdx

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fn from_iter<T: IntoIterator<Item = IdxItem>>(iter: T) -> Self

Creates a value from an iterator. Read more
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impl FromParallelIterator<(u32, UnitVec<u32>)> for GroupsIdx

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fn from_par_iter<I>(par_iter: I) -> Self
where I: IntoParallelIterator<Item = IdxItem>,

Creates an instance of the collection from the parallel iterator par_iter. Read more
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impl<'a> IntoIterator for &'a GroupsIdx

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type Item = (u32, &'a UnitVec<u32>)

The type of the elements being iterated over.
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type IntoIter = Zip<Copied<Iter<'a, u32>>, Iter<'a, UnitVec<u32>>>

Which kind of iterator are we turning this into?
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fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value. Read more
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impl IntoIterator for GroupsIdx

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type Item = (u32, UnitVec<u32>)

The type of the elements being iterated over.
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type IntoIter = Zip<IntoIter<u32>, IntoIter<UnitVec<u32>>>

Which kind of iterator are we turning this into?
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fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value. Read more
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impl<'a> IntoParallelIterator for &'a GroupsIdx

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type Iter = Zip<Copied<Iter<'a, u32>>, Iter<'a, UnitVec<u32>>>

The parallel iterator type that will be created.
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type Item = (u32, &'a UnitVec<u32>)

The type of item that the parallel iterator will produce.
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fn into_par_iter(self) -> Self::Iter

Converts self into a parallel iterator. Read more
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impl IntoParallelIterator for GroupsIdx

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type Iter = Zip<IntoIter<u32>, IntoIter<UnitVec<u32>>>

The parallel iterator type that will be created.
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type Item = (u32, UnitVec<u32>)

The type of item that the parallel iterator will produce.
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fn into_par_iter(self) -> Self::Iter

Converts self into a parallel iterator. Read more
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impl PartialEq for GroupsIdx

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

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Eq for GroupsIdx

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impl StructuralPartialEq for GroupsIdx

Auto Trait 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, dst: *mut T)

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

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fn __clone_box(&self, _: Private) -> *mut ()

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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<'data, I> IntoParallelRefIterator<'data> for I
where I: 'data + ?Sized, &'data I: IntoParallelIterator,

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type Iter = <&'data I as IntoParallelIterator>::Iter

The type of the parallel iterator that will be returned.
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type Item = <&'data I as IntoParallelIterator>::Item

The type of item that the parallel iterator will produce. This will typically be an &'data T reference type.
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fn par_iter(&'data self) -> <I as IntoParallelRefIterator<'data>>::Iter

Converts self into a parallel iterator. Read more
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impl<I> IntoStreamingIterator for I
where I: IntoIterator,

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fn into_streaming_iter(self) -> Convert<Self::IntoIter>

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fn into_streaming_iter_ref<'a, T>(self) -> ConvertRef<'a, Self::IntoIter, T>
where Self: IntoIterator<Item = &'a T>, T: ?Sized,

Turns an IntoIterator of references into a StreamingIterator. Read more
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fn into_streaming_iter_mut<'a, T>(self) -> ConvertMut<'a, Self::IntoIter, T>
where Self: IntoIterator<Item = &'a mut T>, T: ?Sized,

Turns an IntoIterator of mutable references into a StreamingIteratorMut. Read more
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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

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unsafe fn drop(ptr: usize)

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where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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type Error = Infallible

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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.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V