• bearophile <bearophileHUGS lycos.com> Oct 07 2010
• Juanjo Alvarez <fake fakeemail.com> Oct 07 2010
• =?UTF-8?B?IkrDqXLDtG1lIE0uIEJlcmdlciI=?= <jeberger free.fr> Oct 08 2010

bearophile <bearophileHUGS lycos.com> writes:

Juanjo Alvarez:

 Python has the special symbol "_" which is used exactly as
 a no-op (you could call it "foo" it you wanted, but "_"
 doesn't create new memory assignments) so you can expand
 arbitrary tuples without creating new symbols:
 
 a, b, c, _ = ('tuple', 'of', 'three')


This is false both in Python2 and Python3.

In Python3 there is the syntax:
a, *bc = ('tuple', 'of', 'three')

That's semantically similar to the proposed D syntax:
auto record(a, bc...) = record('tuple', 'of', 'three')

Bye,
bearophile

Juanjo Alvarez <fake fakeemail.com> writes:

On Thu, 07 Oct 2010 15:14:12 -0400, bearophile 
<bearophileHUGS lycos.com> wrote:
 This is false both in Python2 and Python3.



What is exactly false on what I said? 

 a, *bc = ('tuple', 'of', 'three')


Yes, that's the syntax for assignment of the remainder, I was 
speaking about *ignoring* the remainder without having it assigned to 
the last element which was one of the proposed effects in the message 
before mine's.

=?UTF-8?B?IkrDqXLDtG1lIE0uIEJlcmdlciI=?= <jeberger free.fr> writes:

Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

Juanjo Alvarez wrote:
 On Thu, 07 Oct 2010 15:14:12 -0400, bearophile
 <bearophileHUGS lycos.com> wrote:
 This is false both in Python2 and Python3.


=20
 What is exactly false on what I said?


 python


[GCC 4.4.3 20100316 (prerelease)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
 a, b, c, _ =3D ('tuple', 'of', 'three')






  File "<stdin>", line 1, in <module>
ValueError: need more than 3 values to unpack






		Jerome
--=20
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