Difference between Swift is and isKindOfClass()? -

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is there difference between following expressions?

if someinstance someclass { }  if someinstance.iskindofclass(someclass)  { }

i assume .iskindofclass() instance method cocoa.

  • the right side of is can type or protocol, whereas argument of .iskindofclass() must reference type (i.e. class). can test conformance @objc protocol using .conformstoprotocol() instead of .iskindofclass() in same way.
  • the left side of is expression, whereas receiver of .iskindofclass() must object reference. compiler complain if compile-time class of expression not known support .iskindofclass(), can overcome casting left side anyobject. swift classes support .iskindofclass() @ runtime.
  • the right side of is type must hard-coded @ compile-time. argument of .iskindofclass() can variable or other expression value computed @ runtime.

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