Of course it is reinventing the wheel. And people will continue to post ebullient posts about it until they start studying formal cs theory and stop mistaking t

Of course it is reinventing the wheel. And people will continue to post ebullient posts about it until they start studying formal cs theory and stop mistaking the implementations details ("java gets closures! c# gets lambda expressions! new web stack for perl!") as the interesting bits. It's just a given that the majority of the ideas posted to programming blogs are just old ideas in new contexts.