references / aliases in Python
Jonathan P.
jbperez808 at yahoo.com
Tue Jan 14 18:44:53 EST 2003
In:
http://www.python.org/cgi-bin/faqw.py?req=show&file=faq06.031.htp
I couldn't exactly follow Steve Holden's example:
function(args).dict[index][index].a = 21
function(args).dict[index][index].b = 42
function(args).dict[index][index].c = 63
But the idea of references did get through because I was
trying to do something similar. I was wondering if there
was a way to get true references in Python ala below:
>>> class A:
def __init__(self):
self.long_name1=5
self.long_name2=15
def f1(self):
ref1=&self.long_descriptive_name1 # hypothetical address-of operator
ref2=&self.long_descriptive_name2
if (*ref1)>(*ref2)+1: (*ref1)=(*ref2)
# hypothetical dereference operator
replacing the long and rather unreadable (in practice it often
gets much worse than shown below):
if self.long_descriptive_name1>self.long_descriptive_name2+1:
self.long_descriptive_name1=self.long_descriptive_name2
Is there a way to get aliases without having to add a pointer
type + referencing / dereferencing operators to Python? What
exactly is the Python philosophy regarding pointer types and
referencing / dereferencing?
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