On Tue, Jun 2, 2015 at 1:17 AM, BartC <b...@freeuk.com> wrote: > On 01/06/2015 14:52, Chris Angelico wrote: >> It's >> >> like the eternal debate about assignment and whether "x = x + 1" is >> nonsense, with advocates preferring "x := x + 1" as being somehow >> fundamentally different. It isn't. It's just a notational change, and >> not even a huge one. (Though I do see the line of argument that it >> should be "x <- x + 1" or something else that looks like an arro'w.) > > > 'x <- x + 1' already means something as an expression (whether x is less > than (-x+1). 'x <= x + 1' has the same problem. > > But I have used "=>" before, for left-to-right assignment. (Mostly I use > ":=")
In Python it does, yes; I'm talking about the language design advocates. Some recommend a two-character ASCII notation like "<-" or "<=", others prefer a single-character symbol eg "←" or "⇦", but whatever it is, it will have no meaning in that language other than assignment. And yes, I can see the value of using an arrow to indicate assignment... but I don't really see a huge problem with using "=" to mean assignment, given that people from a mathematical background will have to grok the entire concept of temporal truth anyway. Whatever symbol you use, it has to be explained. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
