Ruby Standard Library Master Ruby's rich standard library. Ruby comes with powerful built-in classes and modules that handle common programming tasks elegantly. Enumerable The Enumerable module provides iteration methods for collections. Common Enumerable Methods Arrays Hashes Strings Regular Expressions File I/O Time and Date Range Set Best Practices 1. Use Enumerable methods instead of manual loops 2. Chain methods for readability: 3. Use symbol-to-proc ( ) when possible 4. Prefer File.open with blocks for automatic file closing 5. Use for hashes when you want to handle missing keys 6. Leve…