polars::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<u32>, all: Vec<UnitVec<u32>>, sorted: bool) -> GroupsIdx

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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<'_, u32>>, Iter<'_, UnitVec<u32>>>

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pub fn all(&self) -> &[UnitVec<u32>]

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pub fn first(&self) -> &[u32]

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pub fn first_mut(&mut self) -> &mut Vec<u32>

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<(), Error>

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) -> GroupsProxy

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<(u32, UnitVec<u32>)>) -> GroupsIdx

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<(u32, UnitVec<u32>)>>) -> GroupsIdx

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>(iter: T) -> GroupsIdx
where T: IntoIterator<Item = (u32, UnitVec<u32>)>,

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) -> GroupsIdx
where I: IntoParallelIterator<Item = (u32, UnitVec<u32>)>,

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) -> <&'a GroupsIdx as IntoIterator>::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) -> <GroupsIdx as IntoIterator>::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) -> <&'a GroupsIdx as IntoParallelIterator>::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) -> <GroupsIdx as IntoParallelIterator>::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

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Immutably borrows from an owned value. Read more
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unsafe fn clone_to_uninit(&self, dst: *mut u8)

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