Package: Kernel Exceptions

Class: Error

Introduction

Environment: container

This is the main class used to implement the exception handling system (EHS).

It plays two distinct roles:

• that of the exception,

• and that of the exception handler.

You can signal an error with a message as the following:

Error signal: 'This is an error'.

And catch and handle an error like this:

[ Error signal: 'This is an error' ] onErrorDo: [ :err | 
 Console print: 'error:' , err ].

Class Method

Category: instance creation

• signal - Ask ContextHandlers in the sender chain to handle this signal.

• signal: - Ask ContextHandlers in the sender chain to handle this signal with a specified textual description.