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Answer Posted / santu sarkar
Early binding is when your client app can detect at compile
time what object a property or method belongs to. Since
it "knows", it resolves the references and the compiled
executable contains only the code to invoke the object's
properties, methods, events, etc.
This is a good thing if you want to speed because the call
overhead is greatly reduced.
Late binding is the slowest way to invoke the properties
and methods of an object. You use late binding when you
write a function that uses an object variable that acts on
any of several different class objects. Since the compiler
doesn't "know" what class object will be assigned to the
variable, it doesn't resolve the references into the
compiled executable. In this case they are resolved at
runtime... when you actually have an assigned object to
reference the properties and methods to.
Hope this helps.
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