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Processing classes as first class objects

I read the GoF book and at the beginning of the prototype section I read this:

This advantage primarily applies to languages ​​such as C ++ that do not treat classes as first-class objects.

I have never used C ++, but I have a pretty good understanding of OO programming, but it really doesn't make any sense to me. Can anyone there dwell on this in detail (I used \ use: C, Python, Java, SQL, if that helps).

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6 answers

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Java. . java.lang.Class.

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, heres :

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python, . , .. new_instance() , .

class Klass1:
    pass

class Klass2:
    pass

def new_instance(k):
    return k()

instance_k1 = new_instance(Klass1)
instance_k2 = new_instance(Klass2)

print type(instance_k1), instance_k1.__class__
print type(instance_k2), instance_k2.__class__
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