Collections

Every .NET project involves working with lists, dictionaries, and collections. The standard library covers the basics, but you'll quickly find yourself writing the same helper methods across projects - syncing two collections, conditionally adding items, sorting an ObservableCollection, or checking if a collection is null or empty.

MADE.Collections provides a set of extension methods and types that fill these gaps. They're small, focused, and designed to reduce the boilerplate you'd otherwise write yourself.

dotnet add package MADE.Collections

What's included

Feature	What it does
Collection operations	MakeEqualTo, AddRange, RemoveRange, Update, AddIf/RemoveIf, Shuffle, IsNullOrEmpty, and more.
Comparing objects	GenericEqualityComparer for custom equality logic without implementing IEqualityComparer from scratch.
Observable collections	ObservableItemCollection with item-level change tracking, plus Sort/SortDescending for ObservableCollection.
Dictionary extensions	AddOrUpdate and GetValueOrDefault for cleaner dictionary operations.
Queryable extensions	Chunk for splitting IQueryable sources into smaller batch queries.

When to use this package

• You're synchronizing UI collections with data source changes and need MakeEqualTo instead of manually diffing.
• You want conditional add/remove logic without wrapping every operation in an if statement.
• You're using ObservableCollection and need sorting that raises the correct change notifications.
• You need a quick equality comparer for LINQ operations like Union or Distinct without creating a full IEqualityComparer<T> class.

Quick example

using MADE.Collections;

// Sync a UI collection to match a data source
var displayed = new ObservableCollection<Product> { productA, productB, productC };
var latest = await GetProductsAsync();
displayed.MakeEqualTo(latest);

// Sort in place with proper change notifications
displayed.Sort(p => p.Name);

// Conditional operations
displayed.AddIf(newProduct, () => newProduct.IsActive);