Guile is a rather niche language that I love dearly. Guile is a Scheme dialect that features an advanced optimizing bytecode compiler, a JIT compiler, and a modest set of developer tools for inspecting and debugging. Through my time spent developing Chickadee, a game programming library, I have gotten quite familiar with how to get the most out of Guile in terms of performance. Every now and then I share a tip or two with someone on IRC or the fediverse and think “I should blog about this” so now I’m finally doing that. These tips are quite simple and apply to optimizing any dynamic language. The only difference is that there isn’t much in the way of helpful examples specifically for Guile… until now.