9 Things You Should Never Code Yourself

This post highlights nine common coding problems that are often better solved using existing solutions rather than trying to code them from scratch. These problems include parsing HTML and XML, CSV files, JSON data, email address validation, URL processing, date/time manipulation, templating systems, logging frameworks, and security/encryption. The author emphasizes the importance of reusing existing libraries and tools to save time and reduce errors, rather than trying to create custom solutions from scratch.