On 10/25/12 6:24 PM, Jason Bennett wrote:
Let's say I have a set of thread-first calls:
(-> url
a
b
c
d
e)
And let's say that I need to process and save the result of function b
as a second parameter to function e (function b returns a file, and
function e needs the extention of that file). How would I drop a let
into the middle of the thread calls without making a large mess? The
only suggestion I've gotten so far is to move calls A and B into a let
before the thread-first so I can process their return values.
jason
Pallet's thread-exp library has a let-> macro that would do the trick:
https://github.com/pallet/thread-expr/blob/develop/src/pallet/thread_expr.clj#L100-106
I love the thread-expr library but when I spoke with Hugo Duncan at
Clojure West he said that pallet's use of it was largely being replaced
by monads.
-Ben
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