Programming Errors and Error Handling

Study Notes

Syntax Error: Occurs when the code violates the rules of the programming language's syntax.
Runtime Error: Occurs during the execution of the code, often due to invalid operations or invalid data.
Logic Error: Occurs when the code is syntactically correct but produces incorrect results, often due to flawed logic or incorrect assumptions.

Try-Except Blocks: A programming construct used to catch and handle runtime errors.
- Try: The code that may potentially raise an error.
- Except: The code that handles the error, often by displaying an error message or taking alternative actions.
Error Types: Specific types of errors that can be caught and handled, such as ValueError, TypeError, or IOError.

Debugging Techniques:
- Print statements: Temporarily adding print statements to inspect variable values during execution.
- Breakpoints: Pausing execution at a specific point to inspect variables and code flow.
- Debuggers: Specialized tools that provide detailed insights into code execution and variables.
Common Errors:
- Off-by-One Errors: Errors due to incorrect indexing or loop boundaries.
- Null Pointer Exceptions: Errors due to attempting to access or manipulate null or uninitialized variables.

Code Reviews: Regularly reviewing code to catch errors and improve code quality.
Testing: Writing test cases to verify code functionality and catch errors.
Code Analysis Tools: Using tools to automatically detect errors and improve code quality.

Syntax Error: Occurs when code violates programming language syntax rules.
Runtime Error: Occurs during code execution, often due to invalid operations or data.
Logic Error: Occurs when code is syntactically correct but produces incorrect results due to flawed logic or assumptions.

Try-Except Blocks: Used to catch and handle runtime errors.
Try Block: Code that may potentially raise an error.
Except Block: Code that handles the error, often by displaying an error message or taking alternative actions.
Error Types: Specific types of errors that can be caught and handled, such as ValueError, TypeError, or IOError.

Debugging Techniques: Methods used to identify and fix errors.
Print Statements: Temporarily adding print statements to inspect variable values during execution.
Breakpoints: Pausing execution at a specific point to inspect variables and code flow.
Debuggers: Specialized tools that provide detailed insights into code execution and variables.

Off-by-One Errors: Errors due to incorrect indexing or loop boundaries.
Null Pointer Exceptions: Errors due to attempting to access or manipulate null or uninitialized variables.

Code Reviews: Regularly reviewing code to catch errors and improve code quality.
Testing: Writing test cases to verify code functionality and catch errors.
Code Analysis Tools: Using tools to automatically detect errors and improve code quality.