Re: [Bug-apl] Filter fns with ⍙ (delta-underbar) in the name by default?

[Elias Mårtenson]

Yes, good point. I will drop this. :-)

Regards,

Elias

On 10 July 2014 18:04, Juergen Sauermann <address@hidden> wrote:

Hi,

as to opinions, I believe I don't like that either.

Please remember that we have user-defined commands now, so you can easily
create your own commands that do things in the way you prefer.

/// Jürgen

On 07/10/2014 03:43 AM, David B. Lamkins wrote:

Personally, I'm not a fan of having tools codify what's essential a
stylistic convention.

Looking at it another way: This is something I call the "principle of
least surprise... An experienced APL programmer shouldn't have to be
told that )FNS, )OPS and )VARS all have a hidden feature that must be
explicitly disabled to obtain the expected (and standard) behavior.

That said: This is something that's easy to do in APL without changing
the underlying platform.  Here are a couple of functions that you could
use as a starting point:

∇z←⍙class ni ⍙set
   ⍝ Return a character array of every workspace name which includes
   ⍝ all characters in ⍙set. The empty set matches everything. The
   ⍝ optional ⍙class argument selects results by name class; the
   ⍝ default is 2 3 4 (variables, functions and operators).
   ⍎(0=⎕nc '⍙class')/'⍙class←2 3 4'
   z←⊃{ (∧/⊃(⊂,⍙set)∊¨⍵)/⍵ }{ (∧\' '≠⍵)/⍵ }¨⊂[(1+⎕io)]⎕nl ⍙class
∇

∇z←⍙class ne ⍙set
   ⍝ Return a character array of every workspace name which excludes
   ⍝ any character in ⍙set. The empty set excludes nothing. The
   ⍝ optional ⍙class argument selects results by name class; the
   ⍝ default is 2 3 4 (variables, functions and operators).
   ⍎(0=⎕nc '⍙class')/'⍙class←2 3 4'
   z←⊃{ (~∨/⊃(⊂,⍙set)∊¨⍵)/⍵ }{ (∧\' '≠⍵)/⍵ }¨⊂[(1+⎕io)]⎕nl ⍙class
∇
 
If you want to list all names not containing ⍙, do this:

       ne '⍙'

To get just the variables:

       2 ne '⍙'

Or just the functions:

       3 ne '⍙'

Or just the operators:

       4 ne '⍙'

The ni function is complementary.

Add a ]usercmd definition or three to customize this to your taste...

On Wed, 2014-07-09 at 23:12 +0800, Elias Mårtenson wrote:

How about having the )FNS, )OPS and )VARS commands filter out names
that contain a ⍙ symbol by default? Since the idea is that those are
internal names it would make sense to hide them (unless some other
flag is given).


Opinions?


Regards,
Elias