Common Lisp Tutorial - (2) Functions and If. Also lies

In this tutorial I will lie about learning how to define your own functions, and then I will lie once more about the same thing. Afterwards I go over some more data types such as vector, string, and list, while going over the princ function which produces output to a user. Afterwards we learn a little bit about the if special operator as well as truthiness and fakiness via T and nil. I also very briefly discuss some basic data types.

Next time I promise we'll go over defun and other macros

Uncheck the "Hide Extensions" folder option on Windows:
http://windows.microsoft.com/en-US/windows-vista/Show-or-hide-file-name-exten...

That's for Vista, it'll work essentially the same on XP or 7, just get to folder options and one of them will be a checkbox for it.

SBCL:
http://www.sbcl.org/

Common Lisp Hyperspec:
http://www.lispworks.com/documentation/HyperSpec/Front/

Category:

Education

Tags:

• Common
• Lisp
• Programming
• Language
• Tutorial
• SBCL
• Steel
• Bank

[dedudenamedjosh]

So is princ basically exactly like Browse in oz?

[inzanozulu]

@dedudenamedjosh

Actually, princ is most similar to Show in Oz. This is because Browse will continually examine the value of each undetermined expression (as per an unbound variable). Show on the other hand will attempt to use the value of the expression immediately, pausing the current thread until that value is available if need be.

However, because Common Lisp does not natively support lazy evaluation (libaries available to do so, however), princ will error on unbound variables.

[animeisart1]

@animeisart1 WTF? where did the double post come from?

[animeisart1]

@animeisart1

nvm i is retard (syntax err, haven't used cmd in a while)

[animeisart1]

Maybe i is retard. But mine doesn't see the files. wtf?

[HmmmYesQuite]

Thank you so much for putting making these tutorials.