DataFrameColumn.ElementwiseIsNull 方法

定义

对列中的每个值执行等于 Null 的元素

public virtual Microsoft.Data.Analysis.PrimitiveDataFrameColumn<bool> ElementwiseIsNull ();
abstract member ElementwiseIsNull : unit -> Microsoft.Data.Analysis.PrimitiveDataFrameColumn<bool>
override this.ElementwiseIsNull : unit -> Microsoft.Data.Analysis.PrimitiveDataFrameColumn<bool>
Public Overridable Function ElementwiseIsNull () As PrimitiveDataFrameColumn(Of Boolean)

返回

适用于