(map idempotent? [ nil true 97 'a :a "a" ]) # => @[ true true true true true true ] (map idempotent? [ [97] @[97] {0 97} @{0 97} ]) # => @[ false false false false ] (map idempotent? [ (fn []) even? loop file/open ]) # => @[ true true true true ] (map idempotent? [ (file/temp) (fiber/new (fn [])) ]) # => @[ true true ]