Monad transformer that transforms a monad m into a monad in which the base values are sequences. The argument which-m-plus chooses if m-zero and m-plus are inherited from the base monad (use :m-plus-from-base) or adopt sequence-like behaviour (use :m-plus-from-transformer). The default is :m-plus-from-base if the base monad m has a definition for m-plus, and :m-plus-from-transformer otherwise.
; clojure/contrib/monads.clj:487 (defn sequence-t ([m] (sequence-t m :m-plus-default)) ([m which-m-plus] (monad-transformer m which-m-plus [m-result (with-monad m (fn m-result-sequence-t [v] (m-result (list v)))) m-bind (with-monad m (fn m-bind-sequence-t [mv f] (m-bind mv (fn [xs] (m-fmap flatten (m-map f xs)))))) m-zero (with-monad m (m-result (list))) m-plus (with-monad m (fn m-plus-sequence-t [& mvs] (m-reduce concat (list) mvs))) ])))
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