proxy-object

问题 I'm trying to create an object proxy. Attribute/property lookup can be done by simply implementing the __getattribute__ , __setattr__ and __delattr__ methods. However, other functionalities like len(x), x[], bool(x) require other dunder methods like __len__, __getitem__, __bool__ to be implemented. If you don't implement these on the proxy class, but the object you're proxying supports them, your proxy will be incomplete and cause runtime errors. I would therefore like to have a comprehensive

问题 I wrote this C++17 code and expected it to work out of the box. class putc_iterator : public boost::iterator_facade< putc_iterator, void, std::output_iterator_tag > { friend class boost::iterator_core_access; struct proxy { void operator= (char ch) { putc(ch, stdout); } }; auto dereference() const { return proxy{}; } void increment() {} bool equal(const putc_iterator&) const { return false; } }; I'm trying to match the behavior of all the standard OutputIterators by setting my iterator's

问题 My team is developing an REST service wrapper over an existing SOAP based web service. We don't exactly know the SOAP service internals, just have access to the WSDL file. Our REST service wrapper will be just one-to-one mapping. I know in real its not adhere to REST philosophy, even though please allow me to call it REST services. This REST service will be deployed on Tomcat and many client will be accessing it concurrently. The current implementation is that for each client we will be