DataFrameColumn.GroupColumnValues<TKey>(HashSet<Int64>) 方法

定義

命名空間:

Microsoft.Data.Analysis

組件:

Microsoft.Data.Analysis.dll

套件:

Microsoft.Data.Analysis v0.21.1

依其值將這個資料行的資料列分組。

public virtual System.Collections.Generic.Dictionary<TKey,System.Collections.Generic.ICollection<long>> GroupColumnValues<TKey> (out System.Collections.Generic.HashSet<long> nullIndices);

abstract member GroupColumnValues : HashSet -> System.Collections.Generic.Dictionary<'Key, System.Collections.Generic.ICollection<int64>>
override this.GroupColumnValues : HashSet -> System.Collections.Generic.Dictionary<'Key, System.Collections.Generic.ICollection<int64>>

Public Overridable Function GroupColumnValues(Of TKey) (ByRef nullIndices As HashSet(Of Long)) As Dictionary(Of TKey, ICollection(Of Long))

類型參數

TKey

此資料行所保存的資料類型

參數

nullIndices

HashSet<Int64>

傳回

Dictionary<TKey,ICollection<Int64>>

值 () TKey 對應至包含此值的索引。 應該排序集合。