On 26.03.09 at 23:47 -0700 James Hurley apparently wrote:
Watching the web demo today I witnessed a funny thing. It looked like this
twoDimenArray ["stuff"] ["moreStuff"]
I said to myself, So THIS must be the two dimensional arrays I've heard about.
Now silly me, I've been using
oneDimenArray[i,j]
Which I suppose now must be one dimensional arrays where the keys
are lists of two parameters. (But it sure looks like the two
dimensional arrays I held near and dear to my heart, low these many
years.)
Jim,
A short answer can be:
think of multi-dimensional array in Rev as an array of arrays.
A long answer is, well, longer and covers some of the obvious:
An array variable in Rev is a container storing a list of values
which are indexed for retrieval. It is implemented as an associative
array.
http://en.wikipedia.org/wiki/Associative_array
Since the keys of such an array can be anything, you can use two
variables or literals with a comma in-between as index elements. This
makes such an array appear like multi-dimensional arrays of Pascal,
C, Fortran, etc., although technically, you still have
one-dimensional array (each key is effectively a single string, a
concatenation of your variables and comma).
Until now, this was the only way to get multi-dimensionality of your data.
Multi-dimensional arrays go way beyond that, making the index for
each dimension independent, which Trevor so nicely explained and
showed some of the new things possible.
Robert
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