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Use top-level namespaces - Remove unused usings
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@PieterjanDeClippel
PieterjanDeClippel committed Jan 3, 2025
1 parent 8bcebaa commit cd5b5de
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Showing 29 changed files with 612 additions and 671 deletions.
49 changes: 24 additions & 25 deletions ObservableCollection/MintPlayer.ObservableCollection.Test/Extensions/IEnumerable.cs
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@@ -1,37 +1,36 @@
using System.Collections;

namespace MintPlayer.ObservableCollection.Test.Extensions
namespace MintPlayer.ObservableCollection.Test.Extensions;

public static class IEnumerable
{
public static class IEnumerable
public static bool IsNullOrEmpty(this System.Collections.IList list)
{
public static bool IsNullOrEmpty(this System.Collections.IList list)
if (list == null)
{
if (list == null)
{
return true;
}
else
{
return list.Count == 0;
}
return true;
}
public static bool IsNullOrEmpty<T>(this System.Collections.Generic.IList<T> list)
else
{
if (list == null)
{
return true;
}
else
{
return list.Count == 0;
}
return list.Count == 0;
}

public static T[] ToArray<T>(this IList list)
}
public static bool IsNullOrEmpty<T>(this System.Collections.Generic.IList<T> list)
{
if (list == null)
{
var array = new T[list.Count];
list.CopyTo(array, 0);
return array;
return true;
}
else
{
return list.Count == 0;
}
}

public static T[] ToArray<T>(this IList list)
{
var array = new T[list.Count];
list.CopyTo(array, 0);
return array;
}
}
1 change: 1 addition & 0 deletions ...llection/MintPlayer.ObservableCollection.Test/MintPlayer.ObservableCollection.Test.csproj
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Expand Up @@ -4,6 +4,7 @@
<OutputType>Exe</OutputType>
<TargetFramework>net9.0</TargetFramework>
<IsPackable>false</IsPackable>
<ImplicitUsings>enable</ImplicitUsings>
</PropertyGroup>

<ItemGroup>
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58 changes: 27 additions & 31 deletions ObservableCollection/MintPlayer.ObservableCollection.Test/Person.cs
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@@ -1,46 +1,42 @@
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel;
using System.Runtime.CompilerServices;
using System.Text;

namespace MintPlayer.ObservableCollection.Test
namespace MintPlayer.ObservableCollection.Test;

public class Person : INotifyPropertyChanged
{
public class Person : INotifyPropertyChanged
public event PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged([CallerMemberName] string propertyName = "")
{
public event PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged([CallerMemberName] string propertyName = "")
if (PropertyChanged != null)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}

private string firstname;
public string FirstName
private string firstname;
public string FirstName
{
get => firstname;
set
{
get { return firstname; }
set
{
firstname = value;
OnPropertyChanged();
}
firstname = value;
OnPropertyChanged();
}
}

private string lastname;
public string LastName
private string lastname;
public string LastName
{
get => lastname;
set
{
get { return lastname; }
set
{
lastname = value;
OnPropertyChanged();
}
lastname = value;
OnPropertyChanged();
}
}

public string FullName => $"{firstname} {lastname}";
public string FullName => $"{firstname} {lastname}";

public override string ToString() => FullName;
}
public override string ToString() => FullName;
}
224 changes: 110 additions & 114 deletions ObservableCollection/MintPlayer.ObservableCollection.Test/Program.cs
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Original file line number Diff line number Diff line change
@@ -1,133 +1,129 @@
using System;
using System.Linq;
using System.Threading;
using MintPlayer.ObservableCollection.Extensions;
using MintPlayer.ObservableCollection.Extensions;
using MintPlayer.ObservableCollection.Test.Extensions;

namespace MintPlayer.ObservableCollection.Test
namespace MintPlayer.ObservableCollection.Test;

static class Program
{
static class Program
static void Main(string[] args)
{
static void Main(string[] args)
{
//Demo1();
//Demo2();
//Demo3();
DemoMaxItemCount();
Console.ReadKey();
}

private static void Demo1()
//Demo1();
//Demo2();
//Demo3();
DemoMaxItemCount();
Console.ReadKey();
}

private static void Demo1()
{
var collection = new ObservableCollection<string>();
collection.CollectionChanged += (sender, e) =>
{
var collection = new ObservableCollection<string>();
collection.CollectionChanged += (sender, e) =>
Console.WriteLine($"Collection changed:");
if (!e.NewItems.IsNullOrEmpty())
{
Console.WriteLine($"Collection changed:");
if (!e.NewItems.IsNullOrEmpty())
{
var newItemsArray = new string[e.NewItems.Count];
e.NewItems.CopyTo(newItemsArray, 0);
Console.WriteLine($"- items added: {string.Join(", ", newItemsArray)}");
}
if (!e.OldItems.IsNullOrEmpty())
{
var oldItemsArray = new string[e.OldItems.Count];
e.OldItems.CopyTo(oldItemsArray, 0);
Console.WriteLine($"- items removed: {string.Join(", ", oldItemsArray)}");
}
};

collection.Add("Michael");
collection.Enabled = false;
collection.Add("Junior");
collection.Enabled = true;
collection.Add("Jackson");
}

private static void Demo2()
var newItemsArray = new string[e.NewItems.Count];
e.NewItems.CopyTo(newItemsArray, 0);
Console.WriteLine($"- items added: {string.Join(", ", newItemsArray)}");
}
if (!e.OldItems.IsNullOrEmpty())
{
var oldItemsArray = new string[e.OldItems.Count];
e.OldItems.CopyTo(oldItemsArray, 0);
Console.WriteLine($"- items removed: {string.Join(", ", oldItemsArray)}");
}
};

collection.Add("Michael");
collection.Enabled = false;
collection.Add("Junior");
collection.Enabled = true;
collection.Add("Jackson");
}

private static void Demo2()
{
var collection = new ObservableCollection<Person>();
collection.CollectionChanged += (sender, e) =>
{
var collection = new ObservableCollection<Person>();
collection.CollectionChanged += (sender, e) =>
Console.WriteLine($"Collection changed:");
if (!e.NewItems.IsNullOrEmpty())
{
Console.WriteLine($"Collection changed:");
if (!e.NewItems.IsNullOrEmpty())
{
Console.WriteLine($"- items added: {string.Join(", ", e.NewItems.ToArray<Person>().Select(p => p.FullName))}");
}
if (!e.OldItems.IsNullOrEmpty())
{
Console.WriteLine($"- items removed: {string.Join(", ", e.OldItems.ToArray<Person>().Select(p => p.FullName))}");
}
};
collection.ItemPropertyChanged += (sender, e) =>
Console.WriteLine($"- items added: {string.Join(", ", e.NewItems.ToArray<Person>().Select(p => p.FullName))}");
}
if (!e.OldItems.IsNullOrEmpty())
{
Console.WriteLine($"Item property changed: {e.PropertyName}");
};
Console.WriteLine($"- items removed: {string.Join(", ", e.OldItems.ToArray<Person>().Select(p => p.FullName))}");
}
};
collection.ItemPropertyChanged += (sender, e) =>
{
Console.WriteLine($"Item property changed: {e.PropertyName}");
};

new Thread(new ThreadStart(() =>
{
var person1 = new Person { FirstName = "John", LastName = "Doe" };
var person2 = new Person { FirstName = "Jimmy", LastName = "Fallon" };
var person3 = new Person { FirstName = "Michael", LastName = "Douglas" };
new Thread(new ThreadStart(() =>
{
var person1 = new Person { FirstName = "John", LastName = "Doe" };
var person2 = new Person { FirstName = "Jimmy", LastName = "Fallon" };
var person3 = new Person { FirstName = "Michael", LastName = "Douglas" };

// Add 3 items at once
collection.AddRange([person1, person2, person3]);
// Add 3 items at once
collection.AddRange([person1, person2, person3]);

// Change an item property
collection[1].LastName = "Knibble";
// Change an item property
collection[1].LastName = "Knibble";

// Replace item
collection[1] = new Person { FirstName = "Sim", LastName = "Salabim" };
// Replace item
collection[1] = new Person { FirstName = "Sim", LastName = "Salabim" };

// Remove 2 items at once
collection.RemoveRange([person1, person3]);
// Remove 2 items at once
collection.RemoveRange([person1, person3]);

// Add some more people
var person4 = new Person { FirstName = "Johnny", LastName = "Logan" };
var person5 = new Person { FirstName = "Kiddy", LastName = "Bull" };
var person6 = new Person { FirstName = "Jacky", LastName = "Chan" };
collection.AddRange([person4, person5, person6]);
// Add some more people
var person4 = new Person { FirstName = "Johnny", LastName = "Logan" };
var person5 = new Person { FirstName = "Kiddy", LastName = "Bull" };
var person6 = new Person { FirstName = "Jacky", LastName = "Chan" };
collection.AddRange([person4, person5, person6]);

// Remove range using index
collection.RemoveRange(1, 2);
})).Start();
}
// Remove range using index
collection.RemoveRange(1, 2);
})).Start();
}

private static void Demo3()
{
var col = new ObservableCollection<Person>();
var people = new[] {
new Person { FirstName = "Pieterjan", LastName = "De Clippel" },
new Person { FirstName = "Sam", LastName = "Hunt" },
new Person { FirstName = "Michael", LastName = "Jefferson" },
new Person { FirstName = "Bill", LastName = "Belichick" },
};
col.AddRange(people);
}

private static void DemoMaxItemCount()
{
Console.WriteLine("MaxItemCount demo");
const int maxItemCount = 20;
var col = new ObservableCollection<int>();
col.AddRange(Enumerable.Range(0, maxItemCount));
Console.WriteLine(string.Join(", ", col));

// Should remove from head
col.Add(20, maxItemCount);
Console.WriteLine(string.Join(", ", col));

// Should remove from tail
col.Insert(1, 21, maxItemCount);
Console.WriteLine(string.Join(", ", col));

// Should remove from head
col.Insert(maxItemCount / 2, 22, maxItemCount);
Console.WriteLine(string.Join(", ", col));

// Should remove from tail
col.Insert(maxItemCount / 2 - 1, 23, maxItemCount);
Console.WriteLine(string.Join(", ", col));
}
private static void Demo3()
{
var col = new ObservableCollection<Person>();
var people = new[] {
new Person { FirstName = "Pieterjan", LastName = "De Clippel" },
new Person { FirstName = "Sam", LastName = "Hunt" },
new Person { FirstName = "Michael", LastName = "Jefferson" },
new Person { FirstName = "Bill", LastName = "Belichick" },
};
col.AddRange(people);
}

private static void DemoMaxItemCount()
{
Console.WriteLine("MaxItemCount demo");
const int maxItemCount = 20;
var col = new ObservableCollection<int>();
col.AddRange(Enumerable.Range(0, maxItemCount));
Console.WriteLine(string.Join(", ", col));

// Should remove from head
col.Add(20, maxItemCount);
Console.WriteLine(string.Join(", ", col));

// Should remove from tail
col.Insert(1, 21, maxItemCount);
Console.WriteLine(string.Join(", ", col));

// Should remove from head
col.Insert(maxItemCount / 2, 22, maxItemCount);
Console.WriteLine(string.Join(", ", col));

// Should remove from tail
col.Insert(maxItemCount / 2 - 1, 23, maxItemCount);
Console.WriteLine(string.Join(", ", col));
}
}
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