Error Handling
Error handling is a programming practice aimed at anticipating, detecting, and responding to errors that may occur during the execution of a program. It involves implementing mechanisms to catch exceptions or errors at runtime, allowing the program to gracefully recover, provide meaningful error messages, or log the error for debugging purposes, rather than crashing or producing incorrect results. Common techniques for error handling include the use of try-catch blocks, error codes, and assertions, while best practices often emphasize the importance of clear communication to the user, maintaining program stability, and ensuring that resources are properly managed and released even in the event of an error. Proper error handling enhances the robustness and maintainability of software applications.
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1 - Definition of Error Handling: Understanding what error handling is and why it is essential in programming and software development for maintaining program stability.
2) Types of Errors: Distinguishing between different types of errors (syntax errors, runtime errors, logical errors) and their impacts on code execution.
3) Try Catch Blocks: Learning how to use ‘try catch’ statements to gracefully manage exceptions arising during execution.
4) Finally Block: Understanding the purpose of the ‘finally’ block in error handling, which ensures certain code runs regardless of whether an exception was thrown.
5) Throwing Exceptions: Exploring how to create and throw custom exceptions in your applications and when it is appropriate to do so.
6) Error Logging: Techniques for logging errors to help with debugging and maintaining application health.
7) User Friendly Messages: Importance of displaying user friendly error messages instead of technical details that could confuse end users.
8) Graceful Degradation: Strategies for allowing applications to continue functioning even in the event of an error, minimizing user impact.
9) Input Validation: Discussing the role of input validation in preventing errors before they occur through careful checking of user inputs.
10) Error Types in Different Languages: Overview of how error handling varies across different programming languages (e.g., Java, Python, JavaScript) to give students a broad perspective.
11) Best Practices for Error Handling: A set of best practices for error handling to ensure code robustness and maintainability.
12) Use of Assertions: What assertions are and how they can be used during development for checking assumptions and catching errors early on.
13) Testing and Debugging: The relationship between error handling, unit testing, and debugging; emphasizing the importance of testing for identifying potential errors.
14) Recursive Error Handling: Techniques for handling errors in recursive functions, which can be more complex due to the nature of recursion.
15) Impact of Unhandled Exceptions: Discussing what happens when exceptions are not handled and the potential risks they pose to applications.
16) Performance Considerations: Understanding the potential performance implications of extensive error handling and how to balance thoroughness with efficiency.
17) Error Handling Policies: Developing organizational or project level error handling policies that outline standards for error management across codebases.
18) Real world Scenarios: Providing examples of common pitfalls in error handling that students can learn from based on industry case studies.
By covering these points, students will gain a comprehensive understanding of error handling, equipping them with the skills necessary to write robust and reliable code.
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