/// <summary>コピーコンストラクタ。</summary>
/// <param name="previous"></param>
public FunctionData(FunctionData previous) : base( previous )
{
Expression = previous.Expression;
}
/// <summary>コピーコンストラクタ。</summary>
/// <param name="previous"></param>
public FunctionData(FunctionData previous) : base(previous)
{
Expression = previous.Expression;
}