You can do that in C++ too - it is just a lot of manual work. Those other languages just hide (or make easy) all the work needed to do that. There are trade offs though - just because you can in C++ doesn't mean you should: C++ is best where the performance cost of that is unacceptable.

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kragen an hour ago | parent [-]

No, in C++ it's literally impossible. The language provides no way to define a proxy class you can call arbitrary methods on. You have to generate a fresh proxy class every time you have a new abstract base class you want to interpose, either by hand, with a macro processor, or with run-time code generation. There's no language mechanism to compile code that calls .fhqwhgads() successfully on a class that doesn't have a .fhqwhgads() method declared.

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bluGill an hour ago | parent [-]

you don't call fhqwhgads() on your proxy class though. You call runFunction("fhqwhgads") and it all compiles - the proxy class then string matches on the arguments. Of course depending on what you want to do it can be a lot more complex. That is do manually what other languages do for you automatically under the hood.

Again, this is not something you should do, but you can.

	▲	kragen 26 minutes ago \| parent [-]
		That doesn't provide the same functionality, because it requires a global transformation of your program, changing every caller of .fhqwhgads(). By contrast, in OO languages, you typically just define a single method that's a few lines of code. You're sinking into the Turing Tarpit where everything is possible but nothing of interest is easy. Before morning you'll be programming in Brainfuck.