
Re: Compiling numerical iterations
Posted:
Feb 28, 2013 9:25 PM


On 26/02/2013 06:09, firlefranz wrote: > Thanks a lot! To be honest, some of the commands Ray is using, I've never seen before. I stopped using mathematica before version 5 came out. >
Remember that clicking on any function name and pressing F1, will give you some help.
Also, if you are confused about what certain operators do, or what their precedence is in a particular expression, you can always resort to FullForm. Since you want to look at the expression before evaluation, do this:
FoldList[Plus,0, Total@Sign@Table[Most@RandomReal[{1,1},num],{1000}]] //Hold//FullForm
Hold[FoldList[Plus, 0, Total[Sign[Table[Most[RandomReal[List[1, 1], num]], List[1000]]]]]]
The other thing to remember, is that repeated clicking at a point in an expression (or use of Edit/Extend selection) will pick out successively larger complete expressions  whether the expression is FullForm or not. You can copy/paste such an expression somewhere else, and test it to see what it does.
David Bailey http://www.dbaileyconsultancy.co.uk

