Extension Methods about lens HOT 4 CLOSED

var searchType = typeof(IEnumerable<>);
var searchName = "Any";

var types = typeof(System.Linq.Enumerable).Assembly.GetTypes();
var extMeths = from type in types
           where type.IsSealed && !type.IsNested && !type.IsGenericType
           where type.IsDefined(typeof(ExtensionAttribute), false)
           from method in type.GetMethods(BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic)
           where method.IsDefined(typeof(ExtensionAttribute), false)
           select new { Method = method, ArgType = method.GetParameters()[0].ParameterType };

var applying = from exm in extMeths
            where exm.ArgType == searchType || (exm.ArgType.IsGenericType && exm.ArgType.GetGenericTypeDefinition() == searchType)
            where exm.Method.Name == searchName
            select exm.Method;
applying.Dump();