As we already, in the interpreter, use _ for last result, *vars for unpacking a
list of positional variables and ** for unpacking to a dictionary how about
(and this already messes up I18N if you are using _() as an alias for T() to
mark strings for translation).
We also currently use the syntax A().B() to do call method A and then call
method B of the result
How about:
@piped
A(params).B(_, options).C(*_).D(**_)
As a reasonably recognisable (ASCII only) syntax where the @piped decorator
tells us to call each function as soon as we have any returned value(s). The
other familiar option, (for those used to the bash shell), would be to use a
bare - as the marker for where to put the result(s) from the previous stage.
Steve Barnes
-----Original Message-----
From: Stephen J. Turnbull <[email protected]>
Sent: 25 May 2020 02:28
To: Dan Sommers <[email protected]>
Cc: [email protected]
Subject: [Python-ideas] Re: len(path) == len(str(path))
Dan Sommers writes:
> On the other hand, ∘ ruffles a lot of ASCII feathers (but I'm sure > Steven
> knows that).
On the gripping hand, "<>" looks more or less like a circle :-), and we could
finally put barry_as_FLUFL __past__ us! ;-)
Here's a wacky syntax idea: to get a partially applied function of one
argument, substitute the composition symbol for the argument.
So if you have def foo(file, data) and def bar(x, parms) -> data, you could
compose them with composed = foo(file, <>) <> bar(<>, parms) (closing over file
and parms), and then apply composed(x). Not sure about readability, especially
with lots of arguments, or usability.
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