Alexander Burger <a...@software-lab.de> writes:
Hi Alex,
>> And property list extracted with 'lget' from a symbol would be 'true'
>
> You mean 'getl'
ups ...
> This is because the 'get' family of symbol property access functions use
> '==' (pointer equality) for searching.
>
> Example:
>
> : (setq PList '(("val1" a b) ("val2" . c))) # ((VAL VAL KEY) (VAL . KEY))
> -> (("val1" a b) ("val2" . c))
>
> : (putl 'A PList) # New property list for 'A'
> -> (("val1" a b) ("val2" . c))
>
> : (show 'A) # 'A' has two properties
> A NIL
> c "val2" # one with key 'c'
> (a b) "val1" # and one with key '(a b)'
> -> A
>
> : (get 'A 'c) # We can find 'c'
> -> "val2"
>
> : (get 'A '(a b)) # But not '(a b)' because they
> -> NIL # are not pointer-equal
>
> : (get 'A (cdar PList)) # (cdar PList) is (a b)
> -> "val1" # and pointer-equal
ok, thanks, I think now I got it more or less.
--
cheers,
Thorsten
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