Understanding this highly templated C++ function binder

template<typename Container, typename Ret, typename …Args> struct BindImpl { template<Ret (Container::*MemberFunc)(Args…)> class Callable { public: inline constexpr Callable (Container *container) : m_container(container) {} inline Ret operator() (Args …args) const { return (m_container->*MemberFunc)(std::forward<Args>(args)…); } inline Function<Ret(Args…)> toFunction() const { return Function<Ret(Args…)>(*this); } private: Container *m_container; }; }; template<typename Container, typename Ret, typename …Args> BindImpl<Container, Ret, Args…>…

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random backends in use_backend with map file

Imagine we have a backend file like this : test.com backend_1 test.com backend_2 and we have something like this in our haproxy config file frontend http_front bind *:80 stats uri /haproxy?stats use_backend %[str(test.com),map(/etc/haproxy/testmap.map,default)] this config is working but always return backend_1 when u reach to test.com i want it to round-robin the requests to 2…

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How to parse through pandas dataframe, make new column based on the value of two other columns

I would like to create a new column ‘column_new’ based on values from column_1 and column_2 or column_3. If column_1 == ‘C’, then column_new is same value as column_2, but if column_1 == ‘G’, then column_new is same value as column_3. I have tried: def new_value(x): if df1[‘column_1’] == ‘C’ : return df1[‘column_2’] if df1[‘column_1’]…

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