# User Portlet

Todd Rowland
Discussions
Thanks everyone. I woke up in the middle of the night realizing that NotebookImport[Notebook[AllCases[expr,_Cell]] would work. Only learned about NotebookImport a few days ago although it's been around for a couple years.
According to the documentation, the arguments are supposed to be real numbers. That means Reals in Wolfram Language. If you give it integers or rationals (like your code is doing) the documentation says it tries to give an exact rational result. ...
While I don't know why it is designed like this, here are a few possible reasons: 1) The solving algorithms have to be as general as possible (not just quadratic). 2) It would be possible to add an extra layer of code checking for cases where...
Thanks Sander. I guess there are two competing things going on, adding paths to give the electrons more choices and making the paths longer for the electrons. Does anyone know how this calculation matches up with a physics-style sum of paths...
Brad, Glad to see you are still producing good stuff. I remember your work on aperiodic tilings. Have to admit though it is hard to follow this without pictures. Unlike OEIS it is easy to attach images on Community.
Awesome. Does AnglePath simplify the code? What happens long-term? Stephen Wolfram did a live experiment using AnglePath at the [Wolfram Summer School][1], simpler though different from what you see here, but also with the apparent...
Thanks Sander. It is at least partly illuminating that there is a difference between what is popular and what is considered educational, and that what is popular can be quantified. I am not sure exactly what it means though. A few possibilities:...
I agree too. The quote is from Stephen Wolfram's recent blog http://blog.stephenwolfram.com/2016/09/how-to-teach-computational-thinking/ There is more to it than just avoiding loops and conditionals, of course. There is also more to it than...
Good question Sander. It could be Inactive code taking the place whenever the execution tries code which matches the Don't pattern. There could be an expression evaluated, like [Check][1] which returns something when a message is generated, but...
Mark, how do you see the [Wolfram Programming Lab][1] fit in with your vision of projects that have meaning to young students? To David's question, it would seem like both strategies could work. Maybe the latter would be more stable, more...