Presentation: Sorbet: Why and How We Built a Typechecker for Ruby

In June we open-sourced Sorbet, a fast, powerful type checker designed for Ruby.
It's now used in hundreds of companies.
Within Stripe, we've used Sorbet to drive code quality via measurable, concrete indicators.

This talk will cover why we started this project and what contributed to its success.
No prior knowledge of Ruby is expected.