README.md

Combination.Collections

Useful collection primitives that are missing from the .NET standard library.

Collection types provided by this library

LruCache - A threadsafe LRU cache with optional IDisposable support

Usage example

// Creates an LRU cache with a capacity of 10
var lru = new LruCache<string, MyValue>(10); 

// Adds a value for key "key". If key already exists, returns false and leaves the collection unmodified.
var wasAdded = lru.TryAdd("key", value); 

// Gets a value from the LRU, marking it as recent
if(lru.TryGetValue("key", out var value))
{
  // If true, we found it in the cache
}
else
{
  // If false, not in the cache
}

// Remove an item
var wasRemoved = lru.TryRemove("key")