System Function NL: Difference between revisions

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       <td>returns a character ''matrix'' of user '''function names''' and or '''variable names''' where <apll>R</apll> = 3 (function names) and or 2 (variable names).</td>
       <td>returns a character ''matrix'' of the names of '''variables''', '''functions''', '''operators''', etc. where <apll>R</apll> = 2 (variables), 3 (functions), 4 (operators), etc.</td>
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   <td><apll>R</apll> is either 2 (variable names) or 3 (function names) or 2 3 (both function and variable names).</td>
   <td><apll>R</apll> is an integer scalar or vector consisting of the name classes whose names should be returned in <apll>Z</apll>.  For a complete list of Name Classes, see the description of [[System_Function_NC|Quad Name Classification <apll>⎕NC</apll>]].</td>
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       <td></td>
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       <td>returns a character ''matrix'' of user '''function names''' and or '''variable names''' where <apll>R</apll> = 3 (function names) and or 2 (variable names)..</td>
       <td>returns a character ''matrix'' of the names of user '''variables''', '''functions''', '''operators''', etc. where <apll>R = 2</apll> (variables), <apll>3</apll> (functions), <apll>4</apll> (operators), etc.</td>
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   <td><apll>R</apll> is either 2 (var names) or 3 (fns names) or 2 3 (both fns and vars).</td>
   <td><apll>R</apll> is one of more of <apll>2</apll> (variables), <apll>3</apll> (functions), <apll>2 3</apll> (both functions and variables), etc.  For a complete list of Name Classes, see the description of [[System_Function_NC|Quad Name Classification <apll>⎕NC</apll>]].</td>
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   <td><apll>L</apll> is a '''letter''' or '''letters''' for LIMITING fns/var names list, i.e. which BEGIN with the letter(s) to show.</td>
   <td><apll>L</apll> is a '''letter''' or '''letters''' for limiting the names list, i.e. which begin with the letter(s) to show.</td>
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Function '''<apll>⎕NL</apll> may be used inside user functions''' whereas system commands <apll>)FNS</apll> and <apll>)VARS</apll> cannot be used inside a user function.
Function '''<apll>⎕NL</apll> may be used inside user functions''' whereas system commands <apll>)FNS</apll> and <apll>)VARS</apll> cannot be used inside a user function.
<br><br>
<br><br>
'''See Also: [[System_Function_NC|Quad Name Classif. <apll>⎕NC</apll>]]'''<br>
'''See Also: [[System_Function_NC|Quad Name Classification <apll>⎕NC</apll>]]'''<br>


{{SFDM|NL}}
{{SFDM|NL}}

Latest revision as of 19:27, 9 March 2019

Quad Name List - ⎕NL     (System Function)

Monadic Function

Z←⎕NL R returns a character matrix of the names of variables, functions, operators, etc. where R = 2 (variables), 3 (functions), 4 (operators), etc.
R is an integer scalar or vector consisting of the name classes whose names should be returned in Z. For a complete list of Name Classes, see the description of Quad Name Classification ⎕NC.
Z is a character matrix of user objects in the workspace, each row being a name in the workspace.


Quad Names List sample monadic calls: 

      ⎕NL 3     ⍝ list function names in the active workspace
      ⎕NL 2     ⍝ list variable names in the active workspace
      ⎕NL 3 2   ⍝ list function AND variable names in the active workspace
      ⍴⎕NL 3    ⍝ The shape of names list - 1st element returned(# rows) shows the "user Function Count" in the active workspace

List all APL Quad ⎕ System Variables (per APL Standard): 

      ⎕NL 5
⎕alx    
⎕ct     
⎕dm     
⎕dt     
⎕elx    
⎕fc     
⎕feature
⎕fpc    
⎕ic     
⎕io     
⎕lx     
⎕pp     
⎕pr     
⎕pw     
⎕rl     
⎕sa     
⎕wsid

List all APL Quad ⎕ System Functions (per APL Standard): 

      ⎕NL 6
⎕a       
⎕at      
⎕av      
⎕cr      
⎕d       
⎕dl      
⎕dr      
⎕ea      
⎕ec      
⎕em      
⎕error   
⎕es      
⎕et      
⎕ex      
⎕fmt     
⎕fx      
⎕lc      
⎕mf      
⎕nappend 
⎕nc      
⎕ncreate 
⎕nerase  
⎕nl      
⎕nlock   
⎕nnames  
⎕nnums   
⎕nread   
⎕nrename 
⎕nreplace
⎕nresize 
⎕nsize   
⎕ntie    
⎕nuntie  
⎕sysid   
⎕sysver  
⎕t       
⎕tc      
⎕tcbel   
⎕tcbs    
⎕tcesc   
⎕tcff    
⎕tcht    
⎕tclf    
⎕tcnl    
⎕tcnul   
⎕tf      
⎕ts      
⎕ucs     
⎕vr      
⎕wa

NARS has added additional features over and beyond APL's standard ⎕NL. Magic Functions are in some ways for advanced APL programmers and or NARS developers - or anyone with a great idea to improve APL's functionality, see NARS Discussion Board on topics such as New Primitive Operators. To see all magic functions available in NARS use the following: 

      ⎕NL 23 24     ⍝ list all Magic Functions and Operators
#BoxFMT         
#Conform        
#DydConv        
#DydDnShoe      
#DydDomino      
#DydDotDot      
#DydEpsUnderbar 
#DydIota        
#DydIotaUnderbar
#DydLRShoeUnd   
#DydRank        
#DydScan        
#DydScan1       
#DydUpShoe      
#IdnConv        
#IdnDot         
#IdnJotDot      
#MAD            
#MDIU           
#MEO            
#MI             
#MIO            
#MLRS           
#MLRSU          
#MM             
#MMUL           
#MonDnShoe      
#MonDomino      
#MonDot         
#MonDotAll      
#MonDotCr       
#MonDotMf       
#MonDotPerm     
#MonFMT         
#MonIota        
#MonRank        
#MonVR          
#MSD            
#MU             
#RoS2           
#RoS1L          
#RoS1R          
#SD             
      ⎕NL 23
#BoxFMT         
#Conform        
#DydDnShoe      
#DydDomino      
#DydDotDot      
#DydEpsUnderbar 
#DydIota        
#DydIotaUnderbar
#DydLRShoeUnd   
#DydUpShoe      
#IdnDot         
#MAD            
#MDIU           
#MEO            
#MI             
#MIO            
#MLRS           
#MLRSU          
#MM             
#MMUL           
#MonDnShoe      
#MonDomino      
#MonDotAll      
#MonDotMf       
#MonDotPerm     
#MonFMT         
#MonIota        
#MonVR          
#MSD            
#MU             
#SD             
      ⎕NL 24
#DydConv  
#DydRank  
#DydScan  
#DydScan1 
#IdnConv  
#IdnJotDot
#MonDot   
#MonDotCr 
#MonRank  
#RoS2     
#RoS1L    
#RoS1R

Most magic functions are transparent to you the APL user since they implement APL symbol functionality; however, they enhance APL's functionality, ref. ⎕FMT.

Dyadic Function

Z←L ⎕NL R returns a character matrix of the names of user variables, functions, operators, etc. where R = 2 (variables), 3 (functions), 4 (operators), etc.
R is one of more of 2 (variables), 3 (functions), 2 3 (both functions and variables), etc. For a complete list of Name Classes, see the description of Quad Name Classification ⎕NC.
L is a letter or letters for limiting the names list, i.e. which begin with the letter(s) to show.


Quad Names List sample dyadic calls: 

      "A" ⎕NL 3     ⍝ List all function names beginning with A.
      "M" ⎕NL 2     ⍝ List all variable names beginning with M.
      "AC" ⎕NL 3 2  ⍝ List all function AND variable names beginning with letter "A" and also letter "C".

Function ⎕NL may be used inside user functions whereas system commands )FNS and )VARS cannot be used inside a user function.

See Also: Quad Name Classification ⎕NC


Note: ⎕NL is available as both a monadic and dyadic form system function, you cannot assign a value to it.

System Variables (A value may be assigned to these except for ⎕DM)
⎕ALX ⎕CT ⎕DM ⎕DT ⎕ELX ⎕FC ⎕FEATURE ⎕FPC ⎕IC ⎕IO
⎕LR ⎕LX ⎕PP ⎕PR ⎕PW ⎕RL ⎕SA ⎕WSID
Niladic System Functions (a value cannot be assigned to these)
⎕A ⎕AV ⎕EM ⎕ET ⎕LC ⎕NNAMES ⎕NNUMS ⎕SI ⎕SYSID ⎕SYSVER
⎕T ⎕TC ⎕TCBEL ⎕TCBS ⎕TCESC ⎕TCFF ⎕TCHT ⎕TCLF ⎕TCNL ⎕TCNUL
⎕TS ⎕WA
Monadic or dyadic system functions (a value cannot be assigned to these)
⎕AT ⎕CR ⎕DC ⎕DFT ⎕DL ⎕DR ⎕EA ⎕EC ⎕ERROR ⎕ES
⎕EX ⎕FMT ⎕FX ⎕MF ⎕NAPPEND ⎕NC ⎕NCREATE ⎕NERASE ⎕NINFO ⎕NL
⎕NLOCK ⎕NREAD ⎕NRENAME ⎕NREPLACE ⎕NRESIZE ⎕NSIZE ⎕NTIE ⎕NUNTIE ⎕STOP ⎕TF
⎕TRACE ⎕UCS ⎕VR
Note that quad functions and variables (except for the ⎕A family of functions) are case insensitive


See Also
System Commands System Variables and Functions Operators


Keyboard
Alt+Shift ⍪ ≡ ≢ ⍒ ⍋ ⌽ ⍉ ⊖ ⍟ ⍱ ⍲ ⍠ ⌹
Alt ⋄ ¨ ¯ < ≤ ∅ ≥ > ≠ ∨ ∧ × ÷
Shift ~ ! @ # $ % ^ & * ( ) _ +
Key ` 1 2 3 4 5 6 7 8 9 0 - =
Alt+Shift ⍷ √ ⍨ ⍸ ⍥ ⍣ ⍞ ⍬ ⊣
Alt ? ⍵ ∊ ⍴ § ↑ ↓ ⍳ ○ π ← → ⊢
Shift Q W E R T Y U I O P { } |
Key q w e r t y u i o p [ ] \
Alt+Shift ∫ ∂ ⌻ ⍢ ⍙ ⍤ ⍫ ⌷
Alt ⍺ ⌈ ⌊ ∞ ∇ ∆ ∘ ‼ ⎕ ⍎ ⍕
Shift A S D F G H J K L : "
Key a s d f g h j k l ; '
Alt+Shift ⊆ ⊇ χ ⍡ ⍭ ⊙
Alt ⊂ ⊃ ∩ ∪ ⊥ ⊤ ⍦ ⍝ ⍀ ⌿
Shift Z X C V B N M < > ?
Key z x c v b n m , . /
NARS 2000 Lang
Tool
Bar 		← → + - × ÷ * ⍟ ⌹ ○ ! ? √ | ⌈ ⌊ ⊥ ⊤ ⊣ ⊢
≡ ≢ < ≤ = ≥ > ≠ ∨ ∧ ⍱ ⍲ ↑ ↓ ⊂ ⊃ ⌷ ⍋ ⍒
⍳ ∊ ⍸ ⍷ ∪ ∩ ⊆ ⊇ ~ § π .. , ⍪ ⍴ ⌽ ⊖ ⍉
/ \ ⌿ ⍀ ⊙ ¨ ⍨ ⍤ ⍣ ⍡ ⍥ ⍦ . ∘ ⍠ ‼ ⌻ ∂ ∫ ⍞ ⎕ ⍎ ⍕
⋄ ⍝ ∇ ∆ ⍙ _ ⍺ ⍵ ¯ ⍬ ∞ ∅
Second Row i j k i j k l g p r v x
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