Last errors
Last errors : Collection
| Parameter | Type | Description | |
|---|---|---|---|
| Function result | Collection | ← | Collection of error objects |
Description
The Last errors command returns the current stack of errors of the 4D application as a collection of error objects, or null if no error occurred. The stack of errors includes objects sent by the throw command, if any.
This command must be called from an on error call method installed by the ON ERR CALL command.
Each error object contains the following properties:
| Property | Type | Description |
|---|---|---|
| errCode | number | Error code |
| message | text | Description of the error |
| componentSignature | text | Signature of the internal component which returned the error (see below) |
Internal component signatures (4D)
| Component Signature | Component |
|---|---|
| 4DCM | 4D Compiler runtime |
| 4DRT | 4D runtime |
| bkrs | 4D backup & restore manager |
| brdg | SQL 4D bridge |
| cecm | 4D code Editor |
| CZip | zip 4D apis |
| dbmg | 4D database manager |
| FCGI | fast cgi 4D bridge |
| FiFo | 4D file objects |
| HTCL | http client 4D apis |
| HTTP | 4D http server |
| IMAP | IMAP 4D apis |
| JFEM | Form Macro apis |
| LD4D | LDAP 4D apis |
| lscm | 4D language syntax manager |
| MIME | MIME 4D apis |
| mobi | 4D Mobile |
| pdf1 | 4D pdf apis |
| PHP_ | php 4D bridge |
| POP3 | POP3 4D apis |
| SMTP | SMTP 4D apis |
| SQLS | 4D SQL server |
| srvr | 4D network layer apis |
| svg1 | SVG 4D apis |
| ugmg | 4D users and groups manager |
| UP4D | 4D updater |
| VSS | 4D VSS support (Windows Volume Snapshot Service) |
| webc | 4D Web view |
| xmlc | XML 4D apis |
| wri1 | 4D Write Pro |
Internal component signatures (System)
| Component Signature | Component |
|---|---|
| CARB | Carbon subsystem |
| COCO | Cocoa subsystem |
| MACH | macOS Mach subsystem |
| POSX | posix/bsd subsystem (mac, linux, win) |
| PW32 | Pre-Win32 subsystem |
| WI32 | Win32 subsystem |
See also
ON ERR CALL
throw
Error handling
Properties
| Command number | 1799 |
| Thread safe | ✓ |