David Harvey wrote: > > On Nov 17, 2007, at 7:41 PM, William Stein wrote: > >> I'm pretty excited about this! I think it would be extremely >> amazingly >> useful if you could make up some more examples like this one >> >> sage: a = Slider(1,10) >> sage: plot(sin(a()*x),-3,3) > > Why not just > >> plot(sin(a*x),-3,3) > > instead of > >> plot(sin(a()*x),-3,3)
Your first example is what I was originally thinking. It would be simpler. I wasn't sure how it would work to have a slider object multiplied by something, etc. I figured in the end that rather than rewrite all the multiplication, addition, subtraction, etc., it'd be easier to have the __call__ method in "a" return whatever the current value of "a" was, and then let Sage take care of how to use that value in the expression. Can we have "a" be a Slider object and have a*something (or a+something, etc.) make sense without rewriting a bunch of code to have operations work with Widget objects? Can we just attach a "widget" property to any object in Sage? That way "a" could be, say, a number, but it would have a "a.widget" which would encapsulate the necessary widget functionality? I think this would be much more complicated. -Jason --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://sage.scipy.org/sage/ and http://modular.math.washington.edu/sage/ -~----------~----~----~----~------~----~------~--~---
