Size of array

[Richard Gaskin]

Petrides, M.D. Marian wrote:
> Speaking of arrays... Am I correct in understanding that Rev only  
> supports one dimensional arrays or am I misreading the dox?

Rev currently supports associative arrays.  Unlike numerically indexed 
arrays, associative array keys are not restricted to integers only, and 
may use just about any string within the acceptable length range (which 
in Rev I believe is 64k).

Since numerals can be included in such strings, this gives you the 
ability to use numeric indices with associative arrays as you would with 
indexed arrays, e.g.:

   get tMyArray[1]

But using strings as keys also opens up whole new worlds of indexing 
convenience beyond being limited to integers only, such as storing data 
by user name for example:

   put "Kevin" into tCurrentUser
   get tSettingsArray[tCurrentUser]

Because nearly any string can be used as a key, you can use notation 
similar to what you'd expect for multi-dimensional arrays to describe 
unique elements in associative arrays as well:

   get tMyArray[4,4]

For more on associative arrays in general, the Wikipedia entry is a good 
starting point:
<http://en.wikipedia.org/wiki/Associative_array>

For more on Rev's implementation of them, search the docs for "array" or 
"associative".

-- 
  Richard Gaskin
  Managing Editor, revJournal
  _______________________________________________________
  Rev tips, tutorials and more: http://www.revJournal.com