specifying an auto array type

Ali Çehreli via Digitalmars-d-learn digitalmars-d-learn at puremagic.com
Sun Dec 27 15:38:47 PST 2015

On 12/27/2015 08:42 AM, Jay Norwood wrote:

 > However, I was trying to use each!, with the intention of then moving to
 > parallel processing by samples blocks. My guess is this would be more
 > efficient than using parallel map or amap, which would parallel process
 > by function application, if I understand correctly.

There is also taskPool.asyncBuf but it made your code on the other 
thread with apply_metrics() even slower.

 > It isn't clear to me from the examples if something like below can be
 > rewritten to use the chained calls.
 > foreach(i, ref elem; taskPool.parallel(samples, 100))

parallel() returns struct ParallelForeach, which is not an InputRange. 
That limits its usefulness. However, each() seems to work with types 
that provide opApply() (which ParallelForeach does) and the following 
works (in some cases):

     some.range.chain.parallel.each!(/* ... */);


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