Cannot write NS with a object instance to a component

[norbertjurkiewicz84]

Just a suggestion...

Can the []FAPPEND errors be more descriptive. I was racking my head why I couldn't write a NS containing variables to a component. I finally realized that I had a instance of an object in there. The Domain Error wasn't too helpful.

[Morten|Dyalog]

One of the key features of version 13.1 will be ⎕DMX (Diagnostic Message - eXtended). In addition to being a thread safe replacement for ⎕DM/⎕EN, this new system object will allow the interpreter to provide more information about errors. We're still working on deciding exactly what message to issue for the case that you have pointed out, but there will be some additional information.

The following session output from a Beta version of 13.1 shows an experimental user command "]explain" which uses ⎕DMX (the name of the ucmd may change before the release :-)

      1+'a'
DOMAIN ERROR
      1+'a'
     ∧
      ]explain
Numeric value required
      'c:\xxx\yyy\zzz' ⎕FCREATE 0
FILE NAME ERROR
      'c:\xxx\yyy\zzz'⎕FCREATE 0
     ∧
      ]explain
Unable to create file: The system cannot find the path specified.
      ]explain –full
FILE NAME ERROR                                                                            
       'c:\xxx\yyy\zzz'⎕FCREATE 0                                                           
      ∧                                                                                     
 [Component file system error #0010]: Unable to create file                                 
 [Windows GetLastError() returned 3]: The system cannot find the path specified.            
      Internal location:  qfile1.c  3599                                                   
      APL Version: Windows  13.1.11723.0  W  Development  (BuildID=7469c9d0)               
 More help at: http://help.dyalog.com/dmx/13.1/Compone ... -system/10

      ⎕DMX.(↑{⍵ (⍕⍎⍵)}¨⎕NL -2)
 Category          Component file system                                                        
 DM                 FILE NAME ERROR        'c:\xxx\yyy\zzz'⎕FCREATE 0       ∧                   
 EN                22                                                                           
 ENX               10                                                                           
 HelpURL           http://help.dyalog.com/dmx/13.1/Compone ... -system/10 
 InternalLocation   qfile1.c  3599                                                              
 Message           Unable to create file                                                        
 OSError           1 3  The system cannot find the path specified.                              
 Vendor            Dyalog