On Dec 5, 2015 10:21 AM, "BartC" <b...@freeuk.com> wrote: >
> > The latter is not the same. Some of the differences are: > > * ++ and -- are often inside inside expressions and return values (unlike x+=1 in Python) > > * x++ and x-- return the /current/ value of x, unlike x+=1 even if it were to return a value; it would be the new value Since x+=1 is not an expression, this is moot. > * x+=1 requires you to hard-code the value 1, but ++ is not necessarily stepping by 1. You can imagine ++ stepping something to its next value. Note that x+=1 does not necessarily have to mean stepping by 1 either. You could even do something like x+=5 to mean skip the next four values and step x to the value after that. > However, if ++ and -- are only used as statements, then why not simply map them to x+=1? In Python, that would need to be x++ and x-- as ++x or --x have existing meanings. I think a better question is if they're only going to be statements, then why bother adding them? x++ doesn't give you anything you can't get from x+=1, so why commit to supporting the extra syntax? -- https://mail.python.org/mailman/listinfo/python-list
