[Python-ideas] How do you think about these language extensions?

[Chris Barker]

>> # arrow transform (to avoid endless parentheses and try to be more
readable.

> >>
> >>   >> range(5) -> map(.x->x+2, _) -> list(_)
> >>   >> [2,3,4,5,6]
> >
> > I like the idea of chained function calls


parentheses aren't that bad, and as far as I can tell, this is just another
way to call a function on the results of a function.

The above is now spelled:

list(map(lambda x: x+2, range(5)))

which seems fine with me -- the only improvement I see is a more compact
way to spell lambda. (though really, a list comp is considered more
"pythonic" these days, yes?

[x+2 for x in  range(5)]

nicely, we have list comps and generator expressions, so we can avoid the
list0 call.

I know this was a simple example for demonstration's sake, but doesn't look
like an improvement to me.

Of course, in this case, it's chaining iterations, not "ordinary"
functions, so maybe would make more sense in other contexts.

Also,  we need to remember that functions can take *args, **kwargs, etc,
and can return a tuple of just about anything -- not sure how well that
maps to the "pipe" model.

-CHB




-- 

Christopher Barker, Ph.D.
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