Am Mittwoch, 15. Oktober 2014 18:34:39 UTC+2 schrieb Daniel James:
>
> [...]
> In my proposal above, nothing is changing about the fact that transducers 
> transform reducing functions to new reducing functions. The simple change 
> is to use the reducing function that is produced by a transformation stack 
> to seed the initial value of the reduction, rather than using the input 
> reducing function (or explicit input seed value, in the second arity of 
> transduce).
>
>
This is a change I am interested in as well.  Just yesterday I was bitten 
by the fact that in
the 3-arity case the init value of transduce defaults to (f) instead of ((xform 
f)):

While experimenting I was trying to splice a group-by-style transducer into 
an existing
(comp ...) chain.  This step works on a map valued accumulator, and needs 
an initial value
of {} irregardless of what (f) would provide.

-- Michael


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