ArrowStringDataFrameColumn.GetReadOnlyNullBitMapBuffers 方法

定義

命名空間:

Microsoft.Data.Analysis

組件:

Microsoft.Data.Analysis.dll

套件:

Microsoft.Data.Analysis v0.23.0-preview.1.25125.4

來源:

ArrowStringDataFrameColumn.cs

回傳代表 Apache Arrow 格式值的不可變 ReadOnlyMemory<T> 緩衝區 null 枚舉

[System.Runtime.CompilerServices.IteratorStateMachine(typeof(Microsoft.Data.Analysis.ArrowStringDataFrameColumn+<GetReadOnlyNullBitMapBuffers>d__12))]
public System.Collections.Generic.IEnumerable<ReadOnlyMemory<byte>> GetReadOnlyNullBitMapBuffers();

[<System.Runtime.CompilerServices.IteratorStateMachine(typeof(Microsoft.Data.Analysis.ArrowStringDataFrameColumn+<GetReadOnlyNullBitMapBuffers>d__12))>]
member this.GetReadOnlyNullBitMapBuffers : unit -> seq<ReadOnlyMemory<byte>>

Public Iterator Function GetReadOnlyNullBitMapBuffers () As IEnumerable(Of ReadOnlyMemory(Of Byte))

傳回

IEnumerable<ReadOnlyMemory<Byte>>

列舉了包含 ReadOnlyMemory<T> 空位元映射的物件，其元素編碼了欄位值的空位元映射

屬性

IteratorStateMachineAttribute

備註

每個 Tab ReadOnlyMemory<T> 編碼其對應資料緩衝區中值的 null 索引