what the 'check the type' mean and why it need to do that?
4684
What's the canonical way to check for type in Python?
48170
What is the purpose of a question mark after a type (for example: int? myVariable)?
132944
How to Check for a Specific Type of Object in PHP
52386
Why do I get "type has no typeinfo" error with an enum type
144671
What does "where T : class, new()" mean?
175
Where and why do I have to put the "template" and "typename" keywords?
49690
Difference between an unbound wildcard and a raw type
8153
What is a raw type and why shouldn't we use it?
140931
What is the difference between if(!!condition) and if(condition)
114264
How to test enum types?
96317
How to check type of variable in Java?
24647
Why can't C# infer type from this seemingly simple, obvious case
47198
Should I include type="text/javascript" in my SCRIPT tags?
129988
Is type="text/css" necessary in a  tag?
58955
What's the difference between System.Type and System.RuntimeType in C#?
107576
I keep on getting a type error
6194
Difference between class and type