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Assigning key/value pair in disembodied property list

dNora
 Hi,

I'm trying to create key/value pair and add it to the disembodied property list using loop. But it doesn't work as expected.

file2 = infile(f2)
pList = '(nil) ;; initiate disembodied property list       
while(gets(sname2 file2)   
   List2 = parseString(sname2)
   str = nth(0 List2)
   printf("pList->\"%s\"=%s\n" str str)
   pList->"str" = nth(0 List2)
);while
pList
close(file2)

This is output on CIW window:

port:"test_lmap"

pList->"nwel"=nwel

pList->"L71"=L71

pList->"ndif"=ndif

pList->"pwel"=pwel

t

(nil str "pwel")

t

As you can see key name is str not it's value. I tried to assign key as pList->strcat(nth(0 List2)) but I get parser error.

Is there any way to make it work?

Thanks,

Nora
  • Andrew Beckett
    in reply to zssfred

    Hi Fred,

    Hash tables are good when you have lots of completely variable keys; defstruct is good when you have a small number of fixed keys (it's actually implemented as an array under the hood, with a DPL for any non-predefined keys). So defstruct takes less memory and the lookup is reasonable when you have a small number of keys - less efficient if you use non-predefined keys.

    A lot of it boils down to style though - defstructs are more of a specific object than a hash table which is a more general purpose key-value pair storage mechanism.

    Regards,

    Andrew.

  • zssfred
    in reply to Andrew Beckett

    Andrew,

    I understand.

    Thank you.

    Fred

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