On 14/03/2016 14:43, BartC wrote:
On 13/03/2016 09:39, Steven D'Aprano wrote:
On Sun, 13 Mar 2016 04:54 am, BartC wrote:
Common sense tells you it is unlikely.
Perhaps your common sense is different from other people's common
sense. To
me, and many other Python programmers, it's common sense that being
able to
replace functions or methods on the fly is a useful feature worth having.
More on this below.
Perhaps this is an example of the "Blub Paradox":
Perhaps it's time to talk about something which many languages have, but
Python hasn't. Not as far as I know anyway.
That's references to names (sometimes called pointers). So if I write:
a = 100
f(a)
then function f gets passed the value that a refers to, or 100 in this
case. But how do you pass 'a' itself?
Perhaps you can say:
f('a')
and f can do some sort of lookup, if it knows the caller's context, for
such a name and retrieve the value that way. But that's rather
heavy-handed, and f can't distinguish between a reference to a name, and
a string.
http://jeffknupp.com/blog/2012/11/13/is-python-callbyvalue-or-callbyreference-neither/
--
My fellow Pythonistas, ask not what our language can do for you, ask
what you can do for our language.
Mark Lawrence
--
https://mail.python.org/mailman/listinfo/python-list
