For over 20 years, PragmaticProgrammers's book _Programming Ruby_, better known as "The Pickaxe Book", has been an entry point and a reference for the Ruby community. It was, among other things, my introduction to Ruby. It also hasn't been updated since 2013. 1/

The Expression Problem - learn about it by looking at both the strengths/weaknesses of basic OOP/FP and the role of different types of polymorphism - through the work of Uncle Bob Martin Sandi Metz Sic semper tyrannis Li Haoyi Ryan Lemmer slideshare.net/pjschwarz/the-… #scala #haskell #java

I'm giving a talk at #devsforukraine. Registration is free but donations are encouraged. If every single one of my followers donated $2, we could double the money raised. bit.ly/3jQAwV5

🎂 for all during our 99 Bottles of OOP 40% off Birthday sale through June 13 midnight MST. sandimetz.com/99bottles

The 99 Bottles of OOP 40% off Birthday Sale ends tomorrow night! Next sale in December on our Half-Birthdays--that's a long wait. 🎉 now bit.ly/3dgtWEe

The 99 Bottles of OOP 40% off Half-Birthday Sale ends tonight! Next sale in June on our birthdays--that's a long wait. 🎉 now sandimetz.com/99bottles

🎂 for all during our 99 Bottles of OOP 40% off Birthday sale through June 13 midnight MST. bit.ly/3dgtWEe

The 99 Bottles of OOP 40% off Birthday Sale ends tomorrow night! Next sale in December on our half birthdays --that's a long wait. 🎉 now bit.ly/3dgtWEe

🎂 for all during our 99 Bottles of OOP 40% off Half-Birthday sale through December 13 midnight MST. bit.ly/3dgtWEe

The 99 Bottles of OOP 40% off Half-Birthday Sale ends tonight! Next sale in June on our birthdays--that's a long wait. 🎉 now bit.ly/3dgtWEe

🎂 for all during our 99 Bottles of OOP 40% off Birthday sale through June 13 midnight MST. The sale also includes the new POOD-I Virtual course. sandimetz.com/99bottles courses.sandimetz.com/courses/poodi

The 40% off Birthday Sale ends tonight! The sale includes the 99 Bottles of OOP and the POOD-l virtual course. Next sale in December on our half birthdays --that's a long wait. 🎉now sandimetz.com/99bottles courses.sandimetz.com/courses/poodi?…

Now that you've recovered from the election, maybe you're ready to sharpen your chops in writing object-oriented code? The 99 Bottles book is now out in Python! sandimetz.com/99bottles

From here on, it's blue skies for me. 😜 bsky.app/profile/sandim… Not on BlueSky? Follow me on LinkedIn: linkedin.com/in/sandi-metz-… or Mastodon: ruby.social/@sandimetz See you there!

🎂 The 40% off Birthday Sale ends tonight! The sale includes the Python version of 99 Bottles of OOP and the new POOD-I Virtual course. Next sale in June on our birthdays --that's a long wait. 🎉now sandimetz.com

Time flies and birthdays arrive! Get 40% off the Practical Object-Oriented Design I (POOD-I) course and 99 Bottles of OOP book through June 13. sandimetz.com/birthday Buy the POOD-I course and join our monthly AMAs where we discuss OOD, pets and pickleball!

The 40% off Practical Object-Oriented Design I (POOD-I) course and 99 Bottles of OOP book sale ends tomorrow.  Get 'em while they're hot! 50% of this year's profit goes to Habitat for Humanity.  Let's build someone a house. sandimetz.com/birthday