Very cool. Since you have memoize ... does that mean all values are immutable?

Like the built in decorators. I think language design based on what people want to achieve rather than creating the most generic zoo of primitives is underexplored. So this is good.

Language design based on what people want to achieve: that's basically what php, perl, python, visual basic... many others are/were.

It works pretty well!

Then... what people want to achieve changes, maybe they want to write a web app instead of desktop, and then you're screwed. Perl was excellent when everything was text... but when things started being XML or JSON or whatever, less so.

It's a fair point though, languages built around practicality have their place.