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**rprosperi** · 04-24-2015, 05:33 PM

(04-24-2015 05:19 PM)Tugdual Wrote:
(04-24-2015 04:23 PM)DavidM Wrote: From the AUG (Advanced Users Guide) for the RCL command:

Though it's not stated explicitly, this same behavior is applied to many built-in operations where an implicit RCL of a variable is executed. I can't remember the details at the moment, but I'm pretty sure there are at least a couple exceptions to this rule. It all boils down to which SysRPL opcode is used to get a variable's contents onto the stack. Most of the time the parent directories are searched.

Note that this isn't the same as searching all directories. Just the ones in the current path are included.
It is indeed something fundamental to understand.
But this being said is that the right way to go? The calculator would naturally feed the root directory with a lot of crap and a purge is tedious; my conception of a directory is precisely to isolate/encapsulate problems in their own context. So when I create a subdir I would expect to start with a blank page.
In my humble opinion, this mechanism totally ruin the concept of directories.

You can effectively accomplish that by not including variables in the Home (top-most) folder. Create only folders at the top and then you can move into each project folder to do whatever, and the programs running there can only "see" other items in that folder plus the above Home folder, which contains no variables/programs (if you follow this technique). Of course this includes folders in folders, etc.

But you will quicklly find that there are many objects (utilities, etc.) which you really do want to use everyewhere, and these should be stored in Home.

Also, the CUSTOM menu also is (or can be) unique to each folder, so you can can have a set of key assignments unique to the programs, objects, etc in that folder. Just build it and save it to 'CST' within that folder.

Read Bill Wickes purple book on the 48G (included in the MoHPC USB Drive collection) it provides excellent explanations and real world examples of how to use these techniques to build modular tools and programs. Many of his non-trivial tools utilize 3, 4, 5+ different directories (folders). Good Stuff!!