Topic: Syntax of a Conditional

[Sdoman]

Code: [Select]

(cond (getvar 'snapisopair)
       (1 (setvar 'snapisopair 2))
       (2 (setvar 'snapisopair 0))
       (0 (setvar 'snapisopair 1)) )


When I run the code above it returns 'snapisopair, and leaves the value of snapisopair unchanged.    I must be missing something...


 

[Jürg Menzi]

Code: [Select]

(cond (getvar 'snapisopair)
       (1 (setvar 'snapisopair 2))
       (2 (setvar 'snapisopair 0))
       (0 (setvar 'snapisopair 1)) )


When I run the code above it returns 'snapisopair, and leaves the value of snapisopair unchanged.    I must be missing something... 

Hummmm... case?

[JohnK]

Here 'ya go John ...

< insert comment about where you were when this was written >
...

Holly cow!? Jackpot! ...Umm, I would have been in Junior high.

No kidding, i was trying to build a LET yesterday.

Kerry, are you sure you arnt working in my office, cause it seems like you always do this to me; You always seem to know what im doing/thinking/etc.  ...Are you some sort of evil genius?

[Sdoman]

Hummmm... case?

OK, I get it know.  I was assuming that in the original code Se7en had posted that he stumbled across some side effect of the Cond function which allowed it to work as a Case function and it actually worked.  That's how I read it.  Apparently it went over my head.   

Anyhow, I like this one from MP:

Code: [Select]

(setvar "snapisopair"
    (nth
        (getvar "snapisopair")               
       '(1 2 0)
    )
)