Hi, thanks for the feedback.
I would like to clarify that I'm not telling people not to use other Fp Growth libraries. Actually, I do encourage people to use those famous libraries, especially at a production level. They must have done some great optimizations.
On the other hand, the purpose of this article and the repo is to simply walk people through the concept and implementation of Fp Growth. I'm pretty confident that this should be easier to understand compared to the code from those large libraries.
You can treat this more like a tutorial rather than an optimized library :)