Vars
- name: A text string (such as an error message) or other value
- file: The filename where the error occurred, if debugging info is present
- line: The line where the error occurred, if debugging info is present
- desc: Detailed error info including call stack, only used when sent to world.Error()
This datum is created automatically when a runtime error is encountered, if it happens within a try/catch block or you have defined a global error handler with world.Error(). (The New() proc is not called when this happens.) This provides a convenient package for getting file and line number info associated with an error.
If you throw your own exceptions, you do not have to use this, but the EXCEPTION macro is provided to easily create one with the current file and line number.
The desc value is only filled in when you have a world.Error() handler and there is no try/catch handling this error. Just like when no handler is present, less detail will be provided after multiple runtime errors have occurred. This only exists as a convenience feature for logging errors if you want to use something other than world.log.