Exceptions, Errors, and Conditions

Introduction

Nearly all Scheme implementations provide some notion of error handling, and ticket #18 addresses the question of whether we should standardize one. This page is meant to serve as an index for proposals as well as summaries of existing systems.

Proposals

• ExceptionHandlingCowan

System Summaries

• R6RS Exceptions and Conditions
• SRFI-12 Exception Handling (withdrawn)
• SRFI-18 Threading (includes exceptions)
• SRFI-34 Exception Handling (used in Scheme48)
• Chez Scheme 7 Exceptions
• PLT Scheme Errors and Conditions
• MIT Scheme Error System (conditions, errors, and restarts)