AutoLISP Basics

AutoLISP is a hidden gem within AutoCAD – a robust and capable programming language that’s easy to test and develop right from the CAD Command line. Land F/X CEO Jeremiah Farmer has been working with AutoLISP for more than 20 years and will start you off with the basics. This webinar will include recommendations on development environment, best coding practices, and helpful resources along the way. We’ll even program a simple function in real time to show you how it all comes together.

[georgekhaba]

time table:
@3:44 what is autolisp
@5:54 lisp basics
@8:40 data types
@14:41 command line calls
@18:53 function basics
@21:51 Vocabulary
@26:28 design philosophy
@29:14 coding does and don'ts
@30:59 your coding environment
@33:27 getting help
@34:24 coding segment
@34:43 determine the place where the lisp code is saved
@35:50 running hello world
@36:30 the error function explained
@39:09 program to select an object and change its layer color
@40:17 step-1 - selecting the object
@41:47 always declare local variables
@42:18 step-2- selecting the layer
@44:24 step-3- getting the layers color
@47:25 step-4- changing the color
@47:58 step-5- updating the layer
@50:15 step-6- regen to show the changes
@52:14 making the program send an error message when the user fails to select an object or color
@53:05 using "progn" to execute two statement at once
@57:01 setting access panels to see variables value
@58:05 what to do in the code when all the objects are in layer 0

[CyberTrokair]

this short introduction has cleared up soo many difficult to grasp concepts for a non-programmer like me, thank you so much.

[cyberflow]

Excellent video for someone who wants to start doing Autolisp and as a basics in programming in other languages !

[federicomedinauy]

Great presentation, thanks for uploading it. Always fun to see a Zero Wing reference.
I noticed that VS Code has an extension named "AutoCAD AutoLISP Extension" to assist developers in writing and debugging AutoLISP. Cheers.

[RashidAli-qyoo]

Great job. Love it . Thanks for your great teaching skills.

[stefanamg]

Thank you so much for this. I'm an amatuer programmer and I've been writing basic programs for 15 years but I learnt a lot from this.

[LeeMac]

Many thanks for the recommendation Jeremiah!

[rbrtdq]

Thank you so much, this is one of the best videos i saw about AutoLisp!!!

[georgele]

thanks you, for all the basic foundation of the LISP, very helpful

[edgarcortez]

Hi, need help with LISP

it works with AutoCAD but it Does not work AutoCAD LT. What can I do?

[pydzio]

18:34 Shouldn't be said "at zero radians" rather than "at zero degrees" ?

[azzeddineelhachimi]

Thank you very much for this professional tutorial.
I hope there will be other tutorials to share with us your passion for Autolisp programming, and help me to understand and handle dictionaries, Xdata and the advanced features.
Thank you so much.

[TheElementalEnclave]

can you post the link for the Autolisp ref website

[aramansolkar]

Please help.
How to set minimum time code in autolisp . & single User option .

[bknbalu]

Nice One, Got some good idea to start. Thanks

[silambua]

Thank you so much... It was really helpful!

[marcfauve]

thank you, i learnt cool stuff : (acad_colordlg color) but i dont understand why you writte color at the end (tblobjname "layer" layername) cool ! (nentsel) thanks