What exactly is LISP?

[CADMASTER1128]

I have seen it all over the site.

 

Can someone in detail, Please explain what Lisp is and how they are used.

 

What does it to to AutoCAD? How do you use them in CAD

 

Tanks in Advance!!

[Organic]

LISP is a programming language used in AutoCAd where you can easily perform repetitive tasks. it extends Autocad and makes it easier to use in most instances. There are lots of free lisps scripts available to download for free (althoguh you do need full AutoCAd, not LT to use lisp routines).

 

I am only starting out learnign how to use LISP myself.

[ReMark]

I believe they are referred as LISP routines or programs. Scripts are used mainly for batch processing of a large number of files. Prior to Lisp AutoCAD used macros. They are still in use today. A macro gets the job done but not as elegantly as a Lisp routine. A good source for free Lisp routines can be found at the CAD Tips section of Cadalyst magazine. See http://www.cadalyst.com.

[CADMASTER1128]

I believe they are referred as LISP routines or programs. Scripts are used mainly for batch processing of a large number of files. Prior to Lisp AutoCAD used macros. They are still in use today. A macro gets the job done but not as elegantly as a Lisp routine. A good source for free Lisp routines can be found at the CAD Tips section of Cadalyst magazine. See www.cadalyst.com.

 

Do you install theses inn AutoCAD?

[lpseifert]

Do you install these in AutoCAD?

http://www.cadtutor.net/faq/questions/28/How+do+I+use+an+AutoLISP+routine%3F

 

If you're interested in learning Lisp, here's a good site

http://afralisp.net/

[CADMASTER1128]

http://www.cadtutor.net/faq/questions/28/How+do+I+use+an+AutoLISP+routine%3F

 

If you're interested in learning Lisp, here's a good site

http://afralisp.net/

 

Great Links thanks!

 

On the first link there are no pictures...why?

[Lee Mac]

With Scripts (if you have heard of those), the script file just replicates what the user would enter if he/she were to sit and work on the computer - this is ideal for batch processes, where not much is changed, and there is not much room for error.

 

LISP, (and VBA, ObjectARX, .NET etc), however, are programming languages that can be used to manipulate entities (objects), files, and other data within AutoCAD. These can perform a much wider range of operations than most scripts and can handle user input and process this input.

 

LISP has been around a long long time, (second oldest programming language after FORTRAN), but the branch associated with AutoCAD is known as AutoLISP.

 

See here for more:

http://en.wikipedia.org/wiki/Visual_LISP

http://en.wikipedia.org/wiki/LISP

 

Visual LISP is a branch of AutoLISP that was incorporated later - which is a much more enhanced language - allowing programmers to perform operations which are either not possible using plain AutoLISP, or that would usually take a ton of coding.

 

If you have any other questions just ask.

 

Lee