Comment by gilbetron

I've managed to work on two TCL codebases in my career, one in 1992ish, and one in 2011ish. I was very surprised to be working on it the second time! I've said it before, but working on TCL is interesting, kinda fun, and ultimately a lesson in frustration once you get to a certain sized codebase. It really hammered home the need for static typing as your repo gets over 50k lines because it is so "type free". However, it is a cool thought experiment for it's premise, which is more-or-less, "what if everything is a string". It has a lot of benefits, and a lot of nasty side effects. I'm glad I spent time doing it, and I think the use case for which it was made ("Tool Control" roughly speaking) it has good ideas. TK was fun, as well, I miss it in some ways. But ultimately, I find TCL is a dead end for a programming language - the negatives accumulate too quickly.