Initial commit: JDE Scoping Tool migration project

Set up repository with legacy .NET Framework 4.8 source (OLD/), new .NET 10 Blazor solution (NEW/), OpenSpec specifications, documentation, and project configuration.
2026-01-02 07:43:29 -05:00
commit 26ff8d9b4f
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+using System;
+using System.Collections.Generic;
+
+namespace DataModel.Helpers
+{
+    /// <summary>
+    /// LINQ helper methods
+    /// </summary>
+    public static class LinqHelpers
+    {
+        /// <summary>
+        /// Filters for distinct elements by given key
+        /// </summary>
+        /// <typeparam name="TSource">Source data type</typeparam>
+        /// <typeparam name="TKey">Key data type</typeparam>
+        /// <param name="source">Source data</param>
+        /// <param name="keySelector">Key value function</param>
+        /// <returns>Distinct elements from source</returns>
+        public static IEnumerable<TSource> DistinctBy<TSource, TKey>(this IEnumerable<TSource> source, Func<TSource, TKey> keySelector)
+        {
+            HashSet<TKey> keys = new HashSet<TKey>();
+            foreach (TSource element in source)
+            {
+                if (keys.Add(keySelector(element)))
+                {
+                    yield return element;
+                }
+            }
+        }
+
+        /// <summary>
+        /// Groups the data into batches of give size
+        /// </summary>
+        /// <typeparam name="T">Data type of data</typeparam>
+        /// <param name="allData">Data to break into batches</param>
+        /// <param name="batchSize">Size of batches to create</param>
+        /// <returns>Enumerable collection of batches to process</returns>
+        public static IEnumerable<List<T>> BatchGroup<T>(this IEnumerable<T> allData, int batchSize)
+        {
+            List<T> batchGroup = new List<T>();
+
+            //Loop through data and group into batches
+            foreach (T data in allData)
+            {
+                batchGroup.Add(data);
+
+                if (batchGroup.Count == batchSize)
+                {
+                    //Return batch of data
+                    yield return batchGroup;
+                    batchGroup = new List<T>();
+                }
+            }
+
+            //Return remaining data
+            yield return batchGroup;
+        }
+    }
+}