Hi,
The problem is that "arrays" in RunRev are not "arrays" in the same
sense as in languages like C/C++ or Pascal etc. They are really look
up tables. In RunRev instead of passing an index (or indexes) to
retrieve the data for an entry you pass a key. You can fake the way
Arrays work in languages like C/C++ etc, by passing key values such
as "1,5", but this is actually passing a three character key of "1"
"," "2".
I've found that if you are using the key section in a non-trivial way
(like in the 2D array example) it's better to use a function that
returns your munged key for you, e.g. something like this:
function Get2DArrayKey theIndex1,theIndex2
return theIndex1 & "," & theIndex2
end
and to use:
put "xxxx" into my2DArray[Get2DArrayKey(1,5) ]
or
put my2DArray[Get2DArrayKey(1,5)] into myValue
If you *ALWAYS* use this function, you will always get consistent
keys, otherwise you may have the problem you described where it's
starts to get confusing because of extra quote characters, etc.
Hope this Helps
Dave
On 14 Mar 2007, at 08:33, Otto Hansen wrote:
Thanks for that, the site made rev's arrays a little more
understandable.
the method you sent me didn't seem to work but I managed to hack
together some code that works:
put character 2 to the length of leftVar - 1 of leftVar into L
put character 2 to the length of rightVar - 1 of rightVar into R
answer myArray[L,R]
This just strips away the quotation marks from leftVar and rightVar
which after seeing that I site I realized to be the problem
Thanks,
Otto
Henk van der Velden wrote:
Hi Otto,
Rev doesn't support 2 dimensional arrays, so you have to kind of
fake them. That can be done by naming the keys the way you do. But
if you want to get the value of a specific key, you should use:
myArray["x" & comma & "y"]
instead of
myArray["x","y"]
Hope this helps.
You can also take a look at
http://www.sonsothunder.com/devres/revolution/tips/arry001.htm
Kind regards,
Henk
--------------------------
Henk v.d. Velden
iGlow Media
Magda Janssenslaan 36
3584 GR UTRECHT
Netherlands
0031 (0)6 16 024 337
www.iglow-media.nl
I have a two dimensional array in my program and I am having some
trouble
getting values to come out of it.
The array is keyed in both dimentions by entries such as
"s1","s1" "s1","s2"
etc. (the quotes are included in the key for various reasons but
they could
potentially be removed)
the values in the array are either empty or 1
if I call for a value using something like:
answer myArray["s1","s2"]
I will get the value returned to me but if I try to use variables
it doesnt
work right.
If I have a variable leftVar that contains "s1" and rightVar that
contains
"s2" (both with quotes) and I say
answer myArray[leftVar,rightVar]
I get returned an empty message.
I dont seem to have this problem when calling a single dimension
array, only
in my 2-dimension one.
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