[darksaints]

There was the one time I created a random forest in Julia because I was frustrated with the training time in R. It completed training in less than 1/20th the time that R did.

And then 2 weeks later, it wouldn't compile. Ah, the joys of the cutting edge.

[IndianAstronaut]

I have run into several such issues with Python and R as well. Especially with CRAN packages which are often poorly written, black boxy, and don't have intuitive syntax.

[zmjones]

how can an R package be "black boxy"? just look at the source. all the rf packages I am aware of (randomForest, party, and randomForestSRC) are well documented.