On: Why should I have written ZeroMQ in C, not C++ (2012)

[jcelerier]

> Someone smarter than me once pointed out that exceptions are great as long as you don't have to worry about rolling back state

and the point of exceptions in C++ is that they have to be used in combination with the "rolling-back state" feature backed in the language, namely RAII. It's only a pain in language without such things such as C# / Java, but in C++ if I do

    file my_file;
    // .. do stuff
    auto f = std::make_unique<whatever>(...);
    // ...
    throw some_error;

I know that my_file will be closed if it had been opened, and that my memory will be freed.

Of course if your code is littered with `new` and `fopen` left and right that won't work, but the code won't pass code review in the first place :-)

[tonyedgecombe → jcelerier]

C# will let you do something similar with the using statement.

[jcelerier → tonyedgecombe]

but using "using" in C# has to be an explicit action from the programmer. In C++ it's the default behaviour for new values.