instance_of « Reflection « Ruby

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Ruby » Reflection » instance_of

1.	if an object is an instance of a given class with the instance_of? method from Object
2.	Use instance_of? for robustness.
3.	Unlike instance_of?, is_of? or kind_of? also work if the argument is a superclass or module.
4.	Is it a string class instance
5.	Is it a number
6.	Use === to check the class type

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