Sandi Metz @sandimetz Twitter profile

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Last Seen Profiles

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Sandi Metz

@sandimetz

5 years

Me learning something new: Read #1 : WTF? #2 : Huh? #3 : Hmmmm. #4 : OMG! #5 : This is so simple. #6 : Well, I _thought_ I understood this. #7 : GOTO #1 . It's the best thing about programming; there's always more to learn.

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Sandi Metz

@sandimetz

8 years

It's alive! 99 Bottles of OOP is now available at

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Sandi Metz

@sandimetz

7 years

Pleased to announce that "99 Bottles of OOP" book (by me and @kytrinyx ) is now done Done DONE.

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Sandi Metz

@sandimetz

4 years

The 2nd Edition of 99 Bottles of OOP has been released! Officially. 🤸🏽‍♀️ It's 50% longer, has 3 new chapters, and includes 4 books: Ruby & Javascript x Beer & Milk. Free PHP upgrade coming this fall. We're extremely proud of it. Enjoy!

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Sandi Metz

@sandimetz

10 years

Don't write code that guesses the future, arrange code so you can adapt to the future when it arrives.

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Sandi Metz

@sandimetz

5 years

Hey, #rubyconf , the slides from my "Lucky You" talk are now at References are at the end. I was nervous about giving you this talk. I should have known better. Thanks.

Lucky You

RubyConf, 2019

The Half-Life of Code — Sandi Metz

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Sandi Metz

@sandimetz

10 years

Infinitely experienced programmers do not write infinitely complex code; they write code that's blindingly simple.

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Sandi Metz

@sandimetz

7 years

99 Bottles of OOP is 40% off through Dec 13 during our Half-Birthday Sale! It's party time. 🎈🎉 Please enjoy a significant percentage of one🍻 on us.

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Sandi Metz

@sandimetz

10 years

DRYing out 'concepts' exposes sameness and enables reuse; DRYing 'incidental duplication' lies about sameness and impedes change.

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Sandi Metz

@sandimetz

7 years

New blog post about the half-life of code: It's philosophical, but not ☢️ .

I've been thinking about the half-life of code. In his Software that Fits in Your Head talk, Dan North defines the half-life of software as (I'm paraphrasing) "the amount of time required for half...

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Sandi Metz

@sandimetz

7 years

SALE! 99 Bottles of OOP now 40% off today-June 13 'cause it's our birthdays! Woo-hoo! 🎂 🎉 🎈

Make Everything The Same — Sandi Metz

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Sandi Metz

@sandimetz

10 years

Writing code is like writing a book, your efforts are for _other_ readers.

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Sandi Metz

@sandimetz

8 years

99BottlesBook is almost here! Cover? Done. Editing? In progress. News? Signup at .

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Sandi Metz

@sandimetz

8 years

New blog post "Make Everything The Same", inspired by Roman Numerals, and an aversion to complexity.

As part of my local ruby meetup (#westendruby), I've been dabbling in katas and quizzes. Having worked several, I can't help but notice that my solutions are sometimes radically different from the...

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Sandi Metz

@sandimetz

6 years

99 Bottles of OOP is 40% off now-June 13 'cause IT'S OUR BIRTHDAYS! 🎂 🎉 🎈 Use code SANTE18

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Sandi Metz

@sandimetz

4 years

99 Bottles of OOP is now available in PHP (and Ruby and JS)! Enjoy!

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Sandi Metz

@sandimetz

5 years

Luck is Opportunity's child, and many people are orphans. My RubyConf keynote "Lucky You". Thanks @rubyconf @confreaks .

Lucky You

RubyConf, 2019

Breaking Up the Behemoth — Sandi Metz

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Sandi Metz

@sandimetz

2 years

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.

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Sandi Metz

@sandimetz

7 years

New blog post: Breaking Up the Behemoth re the evolution and resolution of large, complex classes.

I've been thinking about how applications evolve, and what we might do if we're unhappy with the results. Three apparently unrelated ideas have been percolating in my head. In this newsletter I'll...

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Sandi Metz

@sandimetz

4 years

*Not an official announcement!* But if you've noticed that the 2nd edition of seems to have been released and you're wondering about your upgrade, stand by. Coupons are headed to your mailbox soon!

Nothing is Something (RailsConf)

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Sandi Metz

@sandimetz

9 years

My 'Nothing is Something' slide deck -> Enjoy. #railsconf

Our code is full of hidden assumptions, things that seem like nothing, secrets that we did not name and thus cannot see. These secrets represent miss…

Polly Want A Message (DeconstructConf)

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Sandi Metz

@sandimetz

5 years

It amazes me, after all these years, how much I still enjoy . I learned new things this morning. Thanks, @peterc .

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Sandi Metz

@sandimetz

6 years

Slides for my "Polly Want A Message" #DeconstructConf ( #GaryConf ) talk are now at Enjoy!

Object-oriented languages have opinions about how best to arrange code. These opinions lead OO to naturally offer certain _affordances_. Just as round…

all the little things (railsconf)

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Sandi Metz

@sandimetz

10 years

Slide deck from my #railsconf 'all the little things' talk now at . Hope you enjoy(ed). :-)

Turning conditionals into objects....

2nd Edition FAQ — Practical Object-Oriented Design in Ruby

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Sandi Metz

@sandimetz

6 years

POODR 2nd Edition is 45% off for Fourth of July (pre) sale. Ships July 27. Use code JULY4 at What's different in 2nd edition?

www.poodr.com

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Sandi Metz

@sandimetz

2 years

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

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Sandi Metz

@sandimetz

6 years

My heartfelt thanks to @rubyconf_au for an amazing conference. Be well, and maybe take a few days off? #rubyconf_au My bike is loaded, so it's off to NZ!

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Sandi Metz

@sandimetz

8 years

My RailsConf talk is out!

Confreaks, LLC

@confreaks

8 years

New Video! @RailsConf Get a Whiff of This by @sandimetz #railsconf

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Sandi Metz

@sandimetz

4 years

🎂for all during our 99 Bottles of OOP 40% off Half-Birthday sale! Through June 13 midnight MST. Upcoming 2nd Ed: 3 new chapters you get 4 books (JS & Ruby x beer & milk) Release in weeks! Buy on sale now and we'll upgrade you for free. 🥳🥳🥳🥳

Why We Argue: Style — Sandi Metz

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Sandi Metz

@sandimetz

9 years

I'm deeply touched by the response to my 'Nothing is Something' #railsconf talk. This community rocks.

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Sandi Metz

@sandimetz

7 years

For those who want to get along, a new blog post examining one way in which we often don't. Why We Argue: Style

I've been thinking about why we argue about code, and how we might transform vehement differences of opinion into active forces for good. My thoughts spring from a very specific context. Ten or...

The Cognitive Biases Tricking Your Brain

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Sandi Metz

@sandimetz

4 years

When I connect my phone to the car google believes that I want directions to either Lowes or Dunkin Donuts. I don't know whether to be proud or appalled. Hmm, I'm headed to grab a few 2x4's but while I'm out maybe I'll .... 🍩

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Sandi Metz

@sandimetz

6 years

I have a cognitive bias towards articles about...cognitive bias. The Atlantic: The Cognitive Biases Tricking Your Brain.

Science suggests we’re hardwired to delude ourselves. Can we do anything about it?

www.theatlantic.com

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Sandi Metz

@sandimetz

9 years

New blog post about recovering from the Wrong Abstraction:

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Sandi Metz

@sandimetz

9 years

Thoughtful, interesting article pondering the future of Ruby and dynamic/static typing by @tomstuart http://t.co/0gkD5C43s0

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Sandi Metz

@sandimetz

3 years

🎂 for all during our 99 Bottles of OOP 40% off Birthday sale through June 13 midnight MST. The second edition has 3 new chapters and 4 books (JS & Ruby x beer & milk).

Issues · codedevotional/community

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Sandi Metz

@sandimetz

8 years

The Brits have ruined me. Working on Chapter 5 of 99 Bottles of OOP and just wrote 'maths' instead of 'math'. cc @tomstuart

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Sandi Metz

@sandimetz

9 months

@eduardsi Just the facts: 1) Eduards has asked me to speak at Devternity numerous times. 2) I signed up for 2023, but then canceled because I scheduled a total knee replacement, 3) Had surgery a week ago! 4) Am very drugged don't @ me!

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Sandi Metz

@sandimetz

9 years

Thoughtful article about simplicity, mental models, human error and software by @soveran

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Sandi Metz

@sandimetz

5 years

Naming is hard. You can do better. Here's help: @tjstankus and I are recording a podcast about naming this week. Thoughts/questions/feedback? and we'll address 'em on air!

A container for issues and feedback. Contribute to codedevotional/community development by creating an account on GitHub.

github.com

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Sandi Metz

@sandimetz

6 years

🎂 for all during our 99 Bottles of OOP 40% off Half-Birthday sale, through Dec 13, midnight MST.

Learning to Teach, Teaching to Learn with Sandi Metz

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Sandi Metz

@sandimetz

8 years

I had a blast chatting with the charming and thoughtful @shanselman .

Sandi Metz and Scott explore the art and science of teaching. How to people learn? How can we be better teachers? When presenting information, what's the best way to get it from your brain into the...

www.hanselminutes.com

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Sandi Metz

@sandimetz

9 months

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

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Sandi Metz

@sandimetz

8 years

Just sent C5 off for round 2 edits. Hope to release update by late Sept. Now? #hammock + 1 bottle of #beer

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Sandi Metz

@sandimetz

9 years

"It is impossible to test everything. It is suicide to test nothing." via @KentBeck in XP Explained http://t.co/CpBYw9u7tu

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Sandi Metz

@sandimetz

10 years

I'm feeling suspicious of nil. New blog post: http://t.co/OO9ZH7lA4c

Suspicions of nil — Sandi Metz

I'm feeling suspicious of nil. What is nil? In a recent newsletter I pondered true and false , and suggested that thinking of them as normal, everyday objects could expand your ideas about OOP. T...

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Sandi Metz

@sandimetz

4 years

I love an article that's both interesting, and also makes me feel as if I could prevail in the face of complexity.

InfoQ

@InfoQ

4 years

The first key to #resilience is to start by balancing granularity. Prefer to define #microservices that answer real business capabilities and examine whether your shared code is speeding you up or holding you back. Find out more: @amirsouchami

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Sandi Metz

@sandimetz

9 years

Duplication is useful when it supplies concrete examples that lead you to the correct abstraction. /cc @rebeccawb @tmornini

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Sandi Metz

@sandimetz

3 years

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

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Sandi Metz

@sandimetz

1 year

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

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Sandi Metz

@sandimetz

9 years

The official version of 'Nothing is Something', thanks to @confreaks .

Confreaks, LLC

@confreaks

9 years

New Video! @railsconf #railsconf - Nothing is Something by @sandimetz http://t.co/PR2DpWTF7t

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Sandi Metz

@sandimetz

3 years

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

GTAC 2013: Empirical Investigation of Software Product Line Quality

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Sandi Metz

@sandimetz

8 years

Thanks, @railsconf , for organizing a great conference, and thanks, #railsconf peeps, for being your glorious selves. Boarded, MCI.

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Sandi Metz

@sandimetz

8 years

Sample of 99 Bottles of OOP book is now online. TOC & Chapter1. Happy reading.

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Sandi Metz

@sandimetz

8 months

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

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Sandi Metz

@sandimetz

10 years

Research: _How_ you write code predicts bugs better than the code that you actually write.

http://g.co/gtac2013Slides: http://goo.gl/pPQ1uKaterina Goseva-Popstojanova, West Virginia UniversitySoftware product lines exhibit high degree of commonalit...

www.youtube.com

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Sandi Metz

@sandimetz

3 years

🎂 Birthday cake for all during our 99 Bottles of OOP 40% off Half-Birthday sale through December 13 midnight MST. The second edition has 3 new chapters and 4 books (JS & Ruby x beer & milk).

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Sandi Metz

@sandimetz

9 years

Duplication is useful when it supplies independent, specific examples of a general concept that you don't yet understand.

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Sandi Metz

@sandimetz

4 years

What ends tomorrow night? The 99 Bottles of OOP 40% off Birthday Sale! Next sale in December on our 1/2 birthdays--that's a long wait.🎉 now. 2nd edition out within weeks: Free upgrade 3 add'l chapters Includes 4 books- Ruby+JS x beer+milk w/PHP to follow

What Does OO Afford? — Sandi Metz

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Sandi Metz

@sandimetz

6 years

New blog post: What Does OO Afford? wherein I discuss overly large classes AND doorknobs. #thrilling

Good Morning, I've been thinking about the affordances of programming languages. A Little Background In my previous post, Breakin Up the Behemoth , I posited an explanation for why OO apps so often...

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Sandi Metz

@sandimetz

7 years

Boarded RDU, #RubyConf bound!

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Sandi Metz

@sandimetz

6 years

I got my first ever talk at @goruco in 2009. That was an amazing conference, and lucky for you, they're still going strong. Saturday, June 16, NYC You'll be glad you went.

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Sandi Metz

@sandimetz

10 years

I'm working on a thirst quenching new OOP book with @kytrinyx . Sign up for tastes at http://t.co/6jBkuBZXB9

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Sandi Metz

@sandimetz

8 years

. @getthemike My sides for "Get A Whiff Of This" are at . #laracon

Get a Whiff of This

A talk about code smells

The Shape at the Bottom of All Things — Sandi Metz

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Sandi Metz

@sandimetz

10 years

OOP is easy if you can recognize the underlying shapes. New blog post: http://t.co/njtpSbpqn1

I've been teaching a fair amount, which means I've been revisiting my 'class problems' regularly. When I chose the problems, I thought that I understood them completely (hubris, I know) but now...

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Sandi Metz

@sandimetz

7 years

We're a community more than a language, and @flavorjones & @goruco nail it. "ruby as a shining city on a hill."

ruby values

If you’ve attended GORUCO in the last ten years, you may have noticed that the conference looks … different this year.

medium.com

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Sandi Metz

@sandimetz

5 years

🎂 for all during our 99 Bottles of OOP 40% off Half-Birthday sale, through December 13, midnight MST The 2nd edition is coming soon. If you buy now, you'll get that edition for free.

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Sandi Metz

@sandimetz

10 years

New blog post: 'Getting it Right by Betting on Wrong', a practical explanation of Open/Closed. http://t.co/4ECvJxEnWu

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Sandi Metz

@sandimetz

8 years

Wish the world were a better place? Sponsor @RubyConfCo . They're doing heavy lifting, sponsoring adds a lever and place to stand.

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Sandi Metz

@sandimetz

1 year

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

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Sandi Metz

@sandimetz

12 years

The wrong abstraction is far more damaging than no abstraction at all. Waiting trumps guessing every time.

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Sandi Metz

@sandimetz

7 years

Announcing: Full-ride scholarship to my fall Practical OOD course. You deserve it. Apply! 💕💕 to sponsor @hashrocket

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Sandi Metz

@sandimetz

7 years

It's the last day of our 40% off 99 Bottles of OOP Birthday Sale. Thanks for all the ❤️ Birthday wishes.

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Sandi Metz

@sandimetz

10 years

Complexity is only justified if it results in higher levels of abstraction that reduce duplication and increase reusability.

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Sandi Metz

@sandimetz

10 years

Slides from my 'all the little things' talk at #roa4

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Sandi Metz

@sandimetz

2 years

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

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Sandi Metz

@sandimetz

4 years

What ends tomorrow night? The 99 Bottles of OOP 40% off Half-Birthday Sale! Next sale in June on our birthdays--that's a long wait. 🎉 now.

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Sandi Metz

@sandimetz

5 years

Wherein we talk tech, and turtles, and bikes. What's not to like?

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Sandi Metz

@sandimetz

5 years

Excited about , my new jig with @tjstankus ! I admit to having been a slacker correspondent, but things are picking up. Sign up funnel our deep thoughts directly to your inbox!

TJ Stankus

@tjstankus

5 years

🎉 The first ever Code Devotional mailing has been sent. It contains an article I wrote about naming things in code. We'll publish it to the blog soon. If you'd like early access to the next article, please (scroll down and) sign up at .

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Sandi Metz

@sandimetz

6 years

My only public Practical Object-Oriented Design course this year is now just 1 month away. Your fellow students will be amazing and class is just plain fun. Join me on May 2 and I'll change how you think about OO.

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Sandi Metz

@sandimetz

8 years

Done. Now waiting to hear from you.

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Sandi Metz

@sandimetz

9 years

My recent chat about OO design and agile development with the kind folks at @TalkingCode . http://t.co/eb1pqc9kms

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Sandi Metz

@sandimetz

4 years

🎂 for all during our 99 Bottles of OOP 40% off Half-Birthday sale through December 13 midnight MST. The second edition has 3 new chapters and 4 books (JS & Ruby x beer & milk).