[Python-ideas] Javascript Destructuring Assignment
Jim Jewett
jimjjewett at gmail.com
Tue Mar 6 18:47:05 CET 2007
On 3/5/07, Brett Cannon <brett at python.org> wrote:
> On 3/5/07, Talin <talin at acm.org> wrote:
> > http://developer.mozilla.org/en/docs/New_in_JavaScript_1.7
...
> > [a,,b] = [1,2,3]
> >
> > In other words, a is assigned the value 1, the value 2 is thrown away,
> > and b is assigned the value 3. In today's Python, this requires a dummy
> > variable.
> It skips in the middle?!? Yuck.
Are you assuming variable-length skips, so that
[a,,b] = [1,2,3,4,5] would mean a=1;b=5 ?
I had read it is just not requiring a name for the unused dummy
variable. It doesn't really seem worse than
[a, _junk, b] = [1,2,3]
or less explicit than
[a,_,b] = [1,2,3]
-jJ
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