> Instead of running a file top-to-bottom, code is run out-of-order which makes the code organization and flow of a program a complete disaster. That's more a

> Instead of running a file top-to-bottom, code is run out-of-order which makes the code organization and flow of a program a complete disaster. That's more a REPL issue than specific to a particular language. It's the tradeoff you make. I write my R programs in Geany and then run the whole thing using Rscript. That gives me a clean environment on every run.