I would just accept the hash, I think a lot of us prefer it to the pseudo keyword args. (defn message [text {:keys [style color]}] ...) (message "Text"

I would just accept the hash, I think a lot of us prefer it to the pseudo keyword args. (defn message [text {:keys [style color]}] ...) (message "Text" {:style :bold :color :red}) To the person asking, that {:keys [style color]} is destructuring, it's not required, but it's nice, it's equivalent to doing: (defn message [text opts] (let [style (:style opts) color (:color opts)] ...))