I don't get it - read stringed association list

Why does this work:

(read (vl-princ-to-string '(("a" 0)("b" 1)("c" 2))))

but this won't:

(read (vl-princ-to-string '(("a" . 0)("b" . 1)("c" . 2))))

???

 

Hi Eric.

I don't see the value of this without it's context.

Anyway, this

(mapcar 'set '(a b)
(mapcar
'(lambda (x) (read (vl-princ-to-string x)))
'(
(("a" 0)("b" 1)("c" 2))
(("a" . 0)("b" . 1)("c" . 2))
)
)
)

!a => ((A 0) (B 1) (C 2))
!b => ((A . 0) (B . 1) (C . 2))

Seems to work to me.

Are you reading data from a data file and then trying
to convert per the above? Are there spaces or mismatched
quotes etc that might play into the fray?

???

 

maybe reload your session?
(read (vl-princ-to-string '(("a" 0)("b" 1)("c" 2))))
((A 0) (B 1) (C 2))
_$

(read (vl-princ-to-string '(("a" . 0)("b" . 1)("c" . 2))))

((A . 0) (B . 1) (C . 2))
_$

(a2k5 win2k)
Mark

 

I'm trying to stick an association list into the registry so it has to be a
string.

(vl-registry-write "HKEY_CURRENT_USER\\SOFTWARE\\my_stuff" "my_key"
(vl-princ-to-string '(("cmdecho" . 0)("dimdec" . 2)("dimpost" .
"<>\"")("dimlunit" . 2)("dimrnd" . 0.01)("dimzin" . 0)(dimtad . 1)(dimtih .
0))))

(setq vals (vl-registry-read "HKEY_CURRENT_USER\\SOFTWARE\\my_stuff"
"my_key"))

(read vals)uke

(vl-registry-delete "HKEY_CURRENT_USER\\SOFTWARE\\my_stuff" "my_key")

 

There's no reason why either of those shouldn't work,
although I'd be willing to guess that a missing space
on either side of the dot in a dotted pair is the culprit.

 

I'm going to guess the value associated with
"dimpost" is making it chuck a wobbly.

 

(vl-princ-to-string ....

Wrong function. Try vl-prin1-to-string

princ/vl-princ-to-string format strings

print/prin1/vl-prin1-to-string do not format strings.

 

Doh! <slap forehead>

Thanks Tony.
--

Regards,
Eric S.
A2005/W2k

 

Hey Eric,

This looks like a standardization thing? Or is for your use only?

jb

 

Hey James! Whasup?

It's for a tool used by my department for ordinate dimensioning in feet,
inches or radius inches.

 

Whasuuuuuuuuuppppp! (bad 90's joke)

Ah, then it changes per user?

I was going to suggest a central drawing database dictionary if it were
shared info . . ..

Nice hearing from you.

jb

 

Yeah, it changes per user. It just stores values to use as defaults.
--

Regards,
Eric S.
A2005/W2k

I was so there, dude.