I love moredots ❤️ With pip install funcoperators, one can implement the *dotmul* iff dotmul can be implemented as a function.
L *dotmul* 1 Would work. Or even a simple tweak to the library would allow L *dot* s to be [x*s for x in L] and L /dot/ s to be [x/s for x in L]" I'd implement something like "if left is iterable and right is not, apply [x*y for x in left] else if both are iterable, apply [x*y for x,y in zip(left, right)] etc." Iterble Disclaimer : I'm the creator of funcoperators On Fri, 1 Feb 2019, 00:23 Steven D'Aprano <st...@pearwood.info wrote: > On Thu, Jan 31, 2019 at 09:51:20AM -0800, Chris Barker via Python-ideas > wrote: > > > I do a lot of numerical programming, and used to use MATLAB and now > numpy a > > lot. So I am very used to "vectorization" -- i.e. having operations that > > work on a whole collection of items at once. > [...] > > You can imagine that for more complex expressions the "vectorized" > approach > > can make for much clearer and easier to parse code. Also much faster, > which > > is what is usually talked about, but I think the readability is the > bigger > > deal. > > Julia has special "dot" vectorize operator that looks like this: > > L .+ 1 # adds 1 to each item in L > > func.(L) # calls f on each item in L > > https://julialang.org/blog/2017/01/moredots > > The beauty of this is that you can apply it to any function or operator > and the compiler will automatically vectorize it. The function doesn't > have to be written to specifically support vectorization. > > > > So what does this have to do with the topic at hand? > > > > I know that when I'm used to working with numpy and then need to do some > > string processing or some such, I find myself missing this > "vectorization" > > -- if I want to do the same operation on a whole bunch of strings, why > do I > > need to write a loop or comprehension or map? that is: > > > > [s.lower() for s in a_list_of_strings] > > > > rather than: > > > > a_list_of_strings.lower() > > Using Julia syntax, that might become a_list_of_strings..lower(). If you > don't like the double dot, perhaps str.lower.(a_list_of_strings) would > be less ugly. > > > > -- > Steven > _______________________________________________ > Python-ideas mailing list > Python-ideas@python.org > https://mail.python.org/mailman/listinfo/python-ideas > Code of Conduct: http://python.org/psf/codeofconduct/ >
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