Hi Steven,

On Sun, May 24, 2020, 8:14 AM Steven D'Aprano

sorted(paths, key=len∘str, reverse=True)
*semi-wink*

Do you have an evil twin with whom you share email.

Yesterday you were arguing against functional programming style on the grounds that filtering based on a predicate was too obscure represented as 'filter(pred, ...))'

Today you want full function composition.

Fwiw, I like function composition. This example makes a good case for it. Too bad that symbol isn't on most keyboards. I don't think 'compose(len, str)' looks so terrible, but it's longer.

> So I implemented `PurePath.__len__` as `str(len(path))`.
>
> Serhiy and Remi objected, because it might not be obvious that the length
> of the path would be the length of string.

It isn't obvious to me that the length of a path is the length of the
string representation of that path.

I thought that the length of the path would be the number of path
components:

/tmp/file # length 2

I wouldn't have predicted that was the length of the string
representation of the path.

--
Steven
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