[Python-Dev] comprehension abbreviation (was: Adding any() and
aleaxit at yahoo.com
Mon Mar 14 13:09:12 CET 2005
On Mar 14, 2005, at 10:57, Gareth McCaughan wrote:
> of way as it's distracting in C or C++ seeing
> Thing thing = new Thing();
> with the type name appearing three times.
I think you can't possibly see this in C:-), you need a star there in
C++, and you need to avoid the 'new' (just calling Thing() should do it
-- maybe you're commixing with Java?), but still, I do agree it looks
uncool... no doubt a subtle ploy by Java and C++ designers to have you
use, instead, the preferable interface-and-factory idioms such as:
IThing thing* = thingFactory();
rather than declaring and instantiating concrete classes, which is just
_so_ three years ago;-)
Back to the Python world, I don't particularly love [x for x in ...] by
any means, but I surely hope we're not tweaking the syntax for such
tiny gains in the 2.4 -> 2.5 transition. Wasn't 2.5 "supposed to be"
mostly about standard library reorganizations, enhancements, etc? Were
there some MAJOR gains to be had in syntax additions, guess that could
be bent, but snipping the [<name> for ...] leading part seems just such
a tiny issue. (If the discussion is about 3.0, and I missed the
indication of that, I apologize).
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