Article:		Embedding F-Script into Cocoa Applications
Subject:		thanks
Date:		2002-08-08 21:55:50
From:		psheldon
Response to: Re: Eg.2, passing and retrieving
Reminds me of a long ago memory of APL. Pretty good memory when I am exhausted from working out a digital laplacian version of Mike Beam's column. Need to figure out how to pencil around an F-Script sentence like : "[:a| a at:a location = 'CHICAGO' & (a capacity >=200)]" Also, might like to know if at: was short for attribute or where to go look it up, eg. examples on how to navigate your pdf book on F-Script. Maybe further columns will get up my nerve to navigate or I shall simply read the book when I get enough confidence.

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• thanks
  2002-08-09 09:46:33  pmougin [Reply | View]
  
  
  You’re right; F-Script is heavily inspired by APL. The "at:" method with an array of boolean argument implements the APL compression functionality.
  
  
  Note that at: is not short for "attribute". It’s similar to the NSArray “objectAtIndex:” method, just more general. For more on this method, look in the F-Script guide (http://www.fscript.org/download/FScriptGuide.pdf) at section 17.
  
  
  And, yes, in order to understand how the array expressions work in F-Script, you should definitely read the guide.
  
  
  Questions are welcome on the F-Script mailing list or directly to me.
  
  
  Phil