Merge branch 'main' of github.com:luoyunchong/FreeKit

src/IGeekFan.FreeKit.Extras/Extensions/EnumerableExtensions.cs

@@ -0,0 +1,10 @@
+namespace IGeekFan.FreeKit.Extras.Extensions;
+
+/// <summary>
+/// IEnumerable 扩展
+/// </summary>
+public static class EnumerableExtensions
+{
+ public static IEnumerable<(T item, int index)> LoopIndex<T>(this IEnumerable<T> self) =>
+ self.Select((item, index) => (item, index));
+}

test/IGeekFan.FreeKit.xUnit/Extras/Extensions/IEnumerableExtensionsTest.cs

@@ -0,0 +1,31 @@
+using IGeekFan.FreeKit.Extras.Extensions;
+using Xunit;
+using Xunit.Abstractions;
+
+namespace IGeekFan.FreeKit.xUnit.Extras.Extensions;
+
+public class EnumerableExtensionsTest
+{
+ private readonly ITestOutputHelper _testOutputHelper;
+
+ public EnumerableExtensionsTest(ITestOutputHelper testOutputHelper)
+ {
+ _testOutputHelper = testOutputHelper;
+ }
+
+ [Fact]
+ public void LoopIndexTest()
+ {
+ // Create a list with integer values
+ List<int> myValues = new List<int>()
+ {
+ 23, 34, 45, 56, 67
+ };
+
+ // Loop through the list and its index using an item/index tuple
+ foreach (var (item, index) in myValues.LoopIndex())
+ {
+ _testOutputHelper.WriteLine($"{index}: {item}");
+ }
+ }
+}

test/IGeekFan.FreeKit.xUnit/IGeekFan.FreeKit.xUnit.csproj

@@ -42,4 +42,5 @@
  </None>
  </ItemGroup>
 
+
 </Project>