On 29/04/15 21:19, diliup gabadamudalige wrote:
It is partly due to curiosity but I also wanted to have a common update method. And as I almost always use the x+= some code, y+=some code for animation stuff I wanted to know how it could be done using this method rather than finding each position separately and assigning with x= some code, y = some code (new position).
OK, Curiosity is good. But the conversion is mainly a math challenge rather than a programming one. And its a very seductive but dangerous mind set to try to force a problem into a pattern that fits how you usually do it. Especially if the transformed code looks less intuitive than the original. When I started in Python it didn't even have the += style of augmented assignment, it was mainly introduced to save some typing, nothing more. Remember that += is still an assignment to x. It is not significantly different or in any way 'better' than the standard assignment. In languages like C '+=' (and even more so '++' which doesn't exist in Python) used to result in performance improvements but optimising compilers have removed even that reason for using it. Now it should just be considered a typing shortcut. -- Alan G Author of the Learn to Program web site http://www.alan-g.me.uk/ http://www.amazon.com/author/alan_gauld Follow my photo-blog on Flickr at: http://www.flickr.com/photos/alangauldphotos _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
