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Subject: Re: Help me pick an API design (OO vs functional)
From: Michael Herrmann <michael.herrmann@getautoma.com>
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Xref: csiph.com comp.lang.python:42010

On Wednesday, March 27, 2013 12:44:49 PM UTC+1, Chris Angelico wrote:
> ...
> Not seeking to advocate this particular option, but it would be
> possible to make a single wrapper for all your functions to handle the
> focus=3D parameter:
>=20
> def focusable(func):
> 	@functools.wraps(func)
> 	def wrapper(*args,focus=3DNone):
> 		if focus: focus.activate()
> 		return func(*args)
> 	return wrapper
>=20
> Then you just decorate all your functions with that:
>=20
> def write(string):
>     # do something with the active window

Hi, sure, I wouldn't have copy-pasted the code and of course there are tech=
niques to avoid code duplication. It's not so much what I'm worried about. =
What I'm worried about is that the concept of window-switching gets "smeare=
d" over several other not-really related concepts such as clicking and typi=
ng. I feel it violates orthogonality: http://www.artima.com/intv/dry3.html =
is the best freely available resource I could find but I think it's best ex=
plained in The Pragmatic Programmer http://www.amazon.com/Pragmatic-Program=
mer-Journeyman-Master/dp/020161622X.

Michael
www.getautoma.com