thread last (->>)

threads value through calls as their last argument

Evaluates expr and threads it through the supplied forms as their last argument. Any form that is not already a function call will be converted into one before threading.

An Example

(->> 0 (+ 10) (\* 2) (/ 5.0))

Will expand to (/ 5.0 (\* 2 (+ 10 0))) and return 0.25.