Go 12

• 9. 5 solid principles Jan 1, 2022
• 8. channel & context Jan 1, 2022
• 7. concurrent programming Jan 1, 2022
• 6. error-handling Jan 1, 2022
• 5. datastructure Jan 1, 2022
• 4. function(adv) Jan 1, 2022
• 3. interface Jan 1, 2022
• 2. method Jan 1, 2022
• 1. slice Jan 1, 2022
• 12. restful-api Jan 1, 2022
• 11. web-server Jan 1, 2022
• 10. test and benchmark Jan 1, 2022