I love DBC and use it in racket all the time. Saves me so much time & frustration. So yay, and congrats on making this. How does using this effect performance?

I love DBC and use it in racket all the time. Saves me so much time & frustration. So yay, and congrats on making this. How does using this effect performance? [edit: strike that i see that in another comment you said you don't know] I remember someone wrote one of these for ruby and the performance impacts of their implementation were just brutal. Like, 2x slower or something (it was a long time ago). Dunno if it was a bad implementation or just something about ruby.