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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def is_valid(self, name, value):
 """ Returns true if the given value matches the type for the given name according to the schema. Returns false otherwise. """

        if name not in self.header_types:
            return False
        t = self.header_types[name]
        if t == ATTR_TYPE_DISCRETE:
            return isinstance(value, int)
        elif t == ATTR_TYPE_CONTINUOUS:
            return isinstance(value, (float, Decimal))
        return True