Re: Is there such a thing as dynamic arrays in classic rexx?

Mr Coffee <coryssanchez@xxxxxxxxx> wrote:

Hello everyone...

Currently I have been making by without using any data structures in
my program but now I have a need for a dynamic array.

For instance:

I'm collecting values from a file such as:
String length of 0000006A000005F2 is 16
1.3.18.0.0.3330->internetRouter
String length of 0000006B0000084C is 16
1.3.18.0.0.6464->aggregateSystem
String length of 0000007B0000084D is 16
Object name: interfaceLink
String length of 0000006B0000084C is 16
1.3.18.0.0.6464->aggregateSystem
String length of 00000011000005E1 is 16
Object name: Non_SNA_Domain_Class

as you can see, there are 2 aggregatedSysm or 1.3.18.0.0.6464
I only want 1 to be saved for later processing.

For instance:
I want to store:
array.1 = "1.3.18.0.0.3330"
array.2 = "1.3.18.0.0.6464"
array.3 = "Non_SNA_Domain_Class"

but if the array element is already in there, I don't want to re-add
it...
so if I'm going to insert the following value: 1.3.18.0.0.6464 into
the array,
and you can see, 1.3.18.0.0.6464 is already in the array, at location:
array.2.
Then don't add it.

In the example you've given there's no obvious reason to use a stem variable
at all. You could just start off with:

things = ""

and later

if wordpos(element,things) = 0 then things = things element

which builds a list of unique elements. Instead of accessing the n'th
element of a stem, as array.n, you'd use word(things,n). Whether that is
sensible is another issue altogether.

Or you could keep a list of values as suggested above, but if you need
arrays of values elsewhere, just store the word-numbers elsewhere.




--
Jeremy C B Nicoll - my opinions are my own.
.

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