次の方法で共有


GroupBy<TKey>.First(String[]) メソッド

定義

public override Microsoft.Data.Analysis.DataFrame First (params string[] columnNames);
override this.First : string[] -> Microsoft.Data.Analysis.DataFrame
Public Overrides Function First (ParamArray columnNames As String()) As DataFrame

パラメーター

columnNames
String[]

戻り値

適用対象