autolisp

Using Lisp (or AutoLisp) how good is the associative lists performance?

I'm doing an AutoLisp project which uses long associative structures to do heavy geometrical processing - so I'm curious about the associative list intense use timing results. How simple/complex is the implementation? It uses some data structure or a normal list of dotted pairs? The are any extension for b-tree or something? ...

Looking for a recommendation for an AutoLisp / VisualLisp book

Can anyone recommend a good introductionary book dealing with AutoLisp and VisualLisp? I found some general Lisp books out there, but I'm uncertain how much Lisp variants differ. I haven't found any in the old questions in here, either. ...

SOAP request from within an AutoLISP/AutoCAD macro

We have built a webservice for a client that uses AutoCAD. They have a macro that runs in AutoCAD that builds a SOAP request. But they have not figured out how to actually send() the soap request to us. So the XML is all proper and ready to go, they just need to send it. Anybody out there familiar enough with AutoLISP to know how to se...