use static lambdas and discards for improved clarity and performance

alex-jitbit · alex-jitbit · commit 23e26178576d · 2025-11-01T02:37:43.000+02:00
diff --git a/FastCache/FastCache.cs b/FastCache/FastCache.cs
@@ -118,7 +118,7 @@ public void AddOrUpdate(TKey key, TValue value, TimeSpan ttl)
 		{
 			var ttlValue = new TtlValue(value, ttl);
 
-			_dict.AddOrUpdate(key, (k, c) => c, (k, v, c) => c, ttlValue);
+			_dict.AddOrUpdate(key, static (_, c) => c, static (_, _, c) => c, ttlValue);
 		}
 
 		/// <summary>
@@ -203,7 +203,7 @@ private TValue GetOrAddCore(TKey key, Func<TValue> valueFactory, TimeSpan ttl)
 			bool wasAdded = false; //flag to indicate "add vs get". TODO: wrap in ref type some day to avoid captures/closures
 			var ttlValue = _dict.GetOrAdd(
 				key,
-				(k) =>
+				(_) =>
 				{
 					wasAdded = true;
 					return new TtlValue(valueFactory(), ttl);

Original file line number	Diff line number	Diff line change
`@@ -118,7 +118,7 @@ public void AddOrUpdate(TKey key, TValue value, TimeSpan ttl)`
`118`	`118`	`{`
`119`	`119`	`var ttlValue = new TtlValue(value, ttl);`
`120`	`120`
`121`		`- _dict.AddOrUpdate(key, (k, c) => c, (k, v, c) => c, ttlValue);`
	`121`	`+ _dict.AddOrUpdate(key, static (_, c) => c, static (_, _, c) => c, ttlValue);`
`122`	`122`	`}`
`123`	`123`
`124`	`124`	`/// <summary>`
`@@ -203,7 +203,7 @@ private TValue GetOrAddCore(TKey key, Func<TValue> valueFactory, TimeSpan ttl)`
`203`	`203`	`bool wasAdded = false; //flag to indicate "add vs get". TODO: wrap in ref type some day to avoid captures/closures`
`204`	`204`	`var ttlValue = _dict.GetOrAdd(`
`205`	`205`	`key,`
`206`		`- (k) =>`
	`206`	`+ (_) =>`
`207`	`207`	`{`
`208`	`208`	`wasAdded = true;`
`209`	`209`	`return new TtlValue(valueFactory(), ttl);`