On Saturday, January 5, 2013 8:45:47 AM UTC, Nathann Cohen wrote: > What the hell ? You are *NOT* supposed to implement an abs() method, > because such a method does not necessarily make sense ! >
There is certainly an argument to be made that abs() should or should not be defined by default. But Nils' question wasn't really about the particular use of abs() but why this mechanism is there in general. Also, x.__abs__() is just the Python magic method for abs(x). The function call syntax abs(x) will always call __abs__ and return an AttributeError if it is not defined. So all we have is an x.abs() method that behaves exactly like abs(x), for better or worse. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To post to this group, send email to sage-devel@googlegroups.com. To unsubscribe from this group, send email to sage-devel+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel?hl=en.
