python needs leaning stuff from other language

[Armin]

On Thursday 02 April 2009 22:40:08 Zac Burns wrote:
> Is it really worth it to not implement list.clear and answer this
> question over and over again?
>
> I see no reason that a list shouldn't have a .clear method.
>
> --
> Zachary Burns
> (407)590-4814
> Aim - Zac256FL
> Production Engineer (Digital Overlord)
> Zindagi Games
>
> On Thu, Apr 2, 2009 at 5:32 PM, Esmail <ebonak at hotmail.com> wrote:
> > Emile van Sebille wrote:
> >> Esmail wrote:
> >>> Diez B. Roggisch wrote:
> >>>> online.service at ymail.com schrieb:
> >>>>> python's list needs a thing  list.clear()  like c# arraylist
> >>>>> and
> >>>>
> >>>> some_list[:] = []
> >>>
> >>> I agree that this is nice and clear, but as a relative newbie
> >>> wouldn't
> >>>
> >>> some_list = []
> >>
> >> This is different -- it creates a new list.  Consider:
> >>
> >>  >>> some_list = [1,2,3]
> >>  >>> d = some_list
> >>  >>> d[1]
> >> 2
> >>  >>> some_list[:] = ['a','b','c']
> >>  >>> d[1]
> >> 'b'
> >>  >>> some_list = [1,2,3]
> >>  >>> d[1]
> >> 'b'
> >>
> >> the [:] form allows references into the list to remain valid while the
> >> direct assignment dopes not.
> >
> > Ah .. thanks for clarifying this .. makes sense.
> >
> > Also, thank you Luis for your post.
> >
> > Esmail
> >
> > --
> > http://mail.python.org/mailman/listinfo/python-list
>
> --
> http://mail.python.org/mailman/listinfo/python-list

A .clear() method wouldn't be beneficial:

del mylist[:]

-- 
Armin Moradi