GreenTriangle questions

• Why doesn't IO.puts work for spawns inside an Enum.each?
• How is it possible to style the selected element within a select element?
• Can anyone provide a code example for accessing this Last.FM API?
• XY prob: How do I issue a bunch of msgs simultaneously?
• Installing the SQLite3 gem on Windows: sqlite.h is found, sqlite itself is not
• Can I use default values in a JSON decoder?
• How can I use the Sieve of Eratosthenes to get the nth prime?
• How it HTTPS secure? Can't anyone decrypt the responses?
• IO woes when seeking sizes of directory contents?
• Implementing the producer-consumer pattern in Ruby

GreenTriangle answers