Cache property lookups for the object parsing

2016-04-27 11:16:54 -04:00
parent 9730600164
commit 790930dd66
10 changed files with 185 additions and 58 deletions
@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Concurrent;
+
+namespace LeafWeb.Core.Utility
+{
+	public static class Memoizer
+	{
+		public static Func<A, R> ThreadsafeMemoize<A, R>(Func<A, R> f)
+		{
+			var cache = new ConcurrentDictionary<A, R>();
+
+			return argument => cache.GetOrAdd(argument, f);
+		}
+
+		public static Func<A1, A2, R> ThreadsafeMemoize<A1, A2, R>(Func<A1, A2, R> f)
+		{
+			var cache = new ConcurrentDictionary<Tuple<A1, A2>, R>();
+
+			return (a1, a2) => cache.GetOrAdd(Tuple.Create(a1, a2), t => f(t.Item1, t.Item2));
+		}
+	}
+}