I find the threading macros expressions much easier to *write* and *edit*
than their nested expression counterparts.
And it comes very handy when working at the REPL, to incrementally build an
expression.
It's easier to toggle on / off some parts of the pipeline than it is for a
nested expression:
(a (b (c (d (e X)))))
oops `d` *may* be wrong, let's try to turn it off:
mmm ... will require a lot of keyboard clicks and paredit magic
On the other hand:
(-> X
e
d
c
b
a)
Turning off `d`:
(-> X
e
#_d
c
b
a)
or even `d` and `b`:
(-> X
e
#_d
c
#_b
a)
piece of cake.
Same goes on for inserting a new expression in a pipeline, pprinting, ...
On Mon, Mar 11, 2013 at 11:58 AM, <[email protected]> wrote:
> So I understand that:
>
> (-> foo bar wibble)
>
> is equivalent to
>
> (wibble (bar (foo)))
>
> With the advantage that the latter version is better, in the sense that
> it's clearer what the final result is (the result of the call to wobble).
>
> What I don't understand is the need for -> the only thing it seems to do
> is make something Lispy appear to be imperative.
>
> Is that it?
>
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