/// <summary>
/// 2つの集合の和集合を取る
/// </summary>
/// <param name="set1">集合1</param>
/// <param name="set2">集合2</param>
/// <returns>集合1∪集合2</returns>
public static FiniteSet <TEnum> Union <TEnum>(this FiniteSet <TEnum> set1, FiniteSet <TEnum> set2)
where TEnum : Enum
{
var retSet = new FiniteSet <TEnum>(set1);
retSet.UnionWith(set2);
retSet.Update();
return(retSet);
}
/// <summary>
/// 2つの集合の対称差（排他的論理和）を取る
/// </summary>
/// <param name="set1">集合1</param>
/// <param name="set2">集合2</param>
/// <returns>集合1△集合2</returns>
public static FiniteSet <TEnum> SymmetricExcept <TEnum>(this FiniteSet <TEnum> set1, FiniteSet <TEnum> set2)
where TEnum : Enum
{
var retSet = new FiniteSet <TEnum>(set1);
retSet.SymmetricExceptWith(set2);
retSet.Update();
return(retSet);
}