Rename Util to Utils; added replaced "object CacheToken" with "CacheManager CacheManager"

1 files changed, 15 insertions, 0 deletions

diff --git a/README b/README
index 3a58696e..73587367 100644
--- a/README
+++ b/README
@@ -135,3 +135,18 @@ Q:	What format do the .ToString() methods use?
 
 A:	They don't use any particular format. They're merely intended as a debugging aid.
 	Currently .ToString() usually matches .ReflectionName, but that may change in the future.
+
+
+Q:	Why are there extension methods IType.IsEnum() and IType.IsDelegate(), but no IType.IsStruct() or IType.IsInterface()?
+
+A:	Because if you're asking whether a type is a struct, it's very likely that you're asking the wrong question.
+	The distinction between class/struct/interface/enum/delegate is important in the world of type definitions, and there's
+	ITypeDefinition.ClassType to address this. But the distinction isn't so important in the world of types.
+	
+	If whatever you are doing works with struct-types, then it likely will also work with enum-types, and also
+	with type parameters constraint to be a value-type.
+	So instead of asking IsStruct(), you really should be asking: IType.IsReferenceType == false
+	
+	Enums and delegates are special because you can do special things with those types (e.g. subtract them from each other).
+	If you really need to know, you can do "type.GetDefinition() != null && type.GetDefinition().ClassType == WhatIWant" yourself,
+	but for the most part you should be fine with IsReferenceType, IsEnum and IsDelegate.