Implemented pagination in profile list

src/Artemis.WebClient.Workshop/Extensions/ReactiveExtensions.cs

@@ -0,0 +1,30 @@
+using System.Reactive.Linq;
+using ReactiveUI;
+using StrawberryShake;
+
+namespace Artemis.WebClient.Workshop.Extensions;
+
+public static class ReactiveExtensions
+{
+    /// <summary>
+    ///     Projects the data of the provided operation result into a new observable sequence if the result is successfull and
+    ///     contains data.
+    /// </summary>
+    /// <param name="source">A sequence of operation results to invoke a transform function on.</param>
+    /// <param name="selector">A transform function to apply to the data of each source element.</param>
+    /// <typeparam name="TSource">The type of data contained in the operation result.</typeparam>
+    /// <typeparam name="TResult">The type of data to project from the result.</typeparam>
+    /// <returns>
+    ///     An observable sequence whose elements are the result of invoking the transform function on each element of
+    ///     source.
+    /// </returns>
+    public static IObservable<TResult> SelectOperationResult<TSource, TResult>(this IObservable<IOperationResult<TSource>> source, Func<TSource, TResult?> selector) where TSource : class
+    {
+        return source
+            .Where(s => !s.Errors.Any())
+            .Select(s => s.Data)
+            .WhereNotNull()
+            .Select(selector)
+            .WhereNotNull();
+    }
+}