add thread_some function (some-> macro) #379
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In Clojure there is a
some->
macro, which acts like->
(thread-first), but without NullPointerException (or something likeunsupported operand type(s) for +: 'NoneType' and 'int'
for toolz). If one of forms returns nil(None), computation stops with nil as a result. This PR offers such functionality for toolz.In order not to implement something like Maybe monad for NoneType I find
some->
macro in toolz very helpful.https://clojuredocs.org/clojure.core/some-%3E