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A comment on PyPy gets funding from Mozilla for Python 3.5 support. Parent comment

Re:PyPy gets funding from Mozilla for Python 3.5 support by icebraining on Wednesday August 10, 2016 @02:06AM (#12259794)
Your example translated to Python is also lazily generated (it uses the lazy equivalent of list comprehensions, called generator expressions):

  source = count(1)
  elevensies = (x * 11 for x in source)
  odd_elevensies = (x for x in elevensies if x%2)
  root_of_odd_elevensies = (math.sqrt(x) for x in odd_elevensies)
To me, the examples seem fairly equivalent, with the exception that Python's is, in my opinion, more readable for a newbie, since it doesn't require knowing map() or grep() - just for loops and ifs.
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Re:PyPy gets funding from Mozilla for Python 3.5 support by kbenson on Wednesday August 10, 2016 @03:36AM (#12260080)
I was aware of generators in python, but I wasn't aware of the lazy lest comprehensions, which is very nice.

I agree list comprehensions in the simple form are easier for a newbie to recognize, but I also like the way map and filter make you think about your actions, and think they are clearer in the less trivial cases (as I mentioned above). I say "filter" because while I am completely familiar with that terminology, I accept that it's an unneeded departure from the common terminology for that task.

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Re:PyPy gets funding from Mozilla for Python 3.5 support by icebraining on Wednesday August 10, 2016 @04:16AM (#12260231)
Well, map and filter may be more clear in certain cases, but I still don't see how they are more powerful. Seems like you can do a 1-for-1 translation between the two.
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Re:PyPy gets funding from Mozilla for Python 3.5 support by kbenson on Wednesday August 10, 2016 @10:19AM (#12261916)
Oh, that's because you must have missed a few comments back where I agreed with you and backed out on any claim they were strictly more powerful. ;)
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Re:PyPy gets funding from Mozilla for Python 3.5 support by icebraining on Wednesday August 10, 2016 @10:48AM (#12262156)
Ah, uh, sorry ;)
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