The docs cover this information under "Creating Transducers", but it
doesn't make clear that the same pattern applies to reducing functions as
well.
- James
On 5 December 2014 at 14:15, Ivan Mikushin wrote:
> Thanks for the answers!
>
> BTW there isn't a word in the docs (http://clojure.org/tra
Thanks for the answers!
BTW there isn't a word in the docs (http://clojure.org/transducers and
http://clojure.github.io/clojure/branch-master/clojure.core-api.html#clojure.core/transduce)
about the intended use of arity-1 of the reducing function f.
@Gary, thanks for suggesting to watch the t
I find these examples very memorable. Despite the doc strings clearly
stating the differences between transduce and reduce, one can still hastily
assume that transducing [0 1 2] will have 0 as the init argument.
I will add that the culprit is in defining the +ten's arguments with [&
args] form,
Maybe watching Rich Hickey's talk at the conj will make what is happening
clearer?
It's basically what James said, but with a lot more details and a few
examples.
On Friday, 5 December 2014, James Reeves wrote:
> Reducing functions have three arities:
>
> 0-arity: returns the initial state
> 1-
Reducing functions have three arities:
0-arity: returns the initial state
1-arity: handles completion
2-arity: reduce step function
Using arities to denote different functionality is a little odd, but it
does make sense for functions like addition and conjoin:
(+) => 0
(+ 1) => 1
(+
