public void FirstEmptyListSource()
{
ListData <object> data = EmptyListData;
Assert.Throws <InvalidOperationException>(() => data.First()).WithMessageNoElements();
Assert.That(data.IsEnumerated, Is.False); // # Should not enumerate due to IList optimization
}
public void FirstNonEmptyListSource()
{
ListData <int> data = ListData(1, 2, 3);
Assert.That(data.First(), Is.EqualTo(1));
Assert.That(data.IsEnumerated, Is.False);
}
public MainViewModel()
{
// DialogService is used to handle dialogs
this.DialogService = new MvvmDialogs.DialogService();
_listData = new ObservableCollection <SampleModel>()
{
new SampleModel()
{
Name = "姫路しかま", Address = "兵庫県姫路市", Age = 25, Birthday = new DateTime(1974, 1, 12), Job = "プログラマー"
},
new SampleModel()
{
Name = "元町もとこ", Address = "兵庫県神戸市中央区", Age = 45, Birthday = new DateTime(1988, 1, 12), Job = "SE"
},
};
SelectionListData = ListData.First();
CalendarCollection = new CalendarCollectionModel(InputDatetime);
#region non meaning
// クラスの宣言
var classlist = new List <SampleModel>()
{
new SampleModel()
{
Name = "名前１", Age = 10, Address = "姫路",
},
new SampleModel()
{
Name = "名前２", Age = 20, Address = "姫路",
},
new SampleModel()
{
Name = "名前３", Age = 30, Address = "姫路",
},
new SampleModel()
{
Name = "なまえ４", Age = 40, Address = "神戸",
},
};
// 「名前」を含む人を取り出す
var linq1 = classlist.Where(x => x.Name.Contains("名前"));
// 年齢の合計
var linq2 = classlist.Sum(x => x.Age);
// 「名前：年齢：住所」で転写
Func <SampleModel, string> formatMember = x => x.Name + "：" + x.Age.ToString() + "：" + x.Address;
var linq3 = classlist.Select(formatMember);
ListData.Aggregate(new ObservableCollection <SampleModel>(), (x, y) => x);
#endregion
}