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I found Sandy Metz's keynote inspirational and moving. This session will not be that. So, if that's what you're looking for, you're in the wrong spot. We are aiming for wacky fun here.
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We are going to play a game. I don't want to call it Jeopardy; I don't know if we can do that, so we'll call it Peril. We're going to play with some Ruby trivia.
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Before we do that, I have to thank my contestants. I basically emailed them, and they said no. I bugged them until I talked them into saying yes and got them to come up here to let me make fun of them on stage, which is so cool.
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So, help me welcome them. Our first contestant has one thing all Rubyists wish they had: great hair. But no, seriously, more often than we see his hair, we hear his voice as a regular panelist on the Ruby Rogues podcast, as the producer of The Amazing Ruby Toas screencast series, and as the author of many books that help us write confident code.
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Please welcome OBD Gri. My second contestant wrote the book that changed all our lives, Programming Elixir. You just don't know it yet. Before he did that, he also wrote a book you may have heard of called Programming Ruby. And before that, he wrote a book known as The Pragmatic Programmer. As a signatory of the Agile Manifesto, there's little doubt how much influence Dave has had on our day-to-day development.
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Please welcome Dave Thomas. My third contestant is a born teacher, and I know we all learn things from him every day in philosophy. When he's not teaching us that, he is usually saving open-source projects, continuing a wise legacy, or triaging Rails issues, among a million other things. I'm pretty confident he does not sleep. Please welcome Steve.
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The first category is 'People in History of Ruby.' The second is 'Syntax of Ruby,' so things like operators and keywords are fair game. The third is 'Core Methods,' which includes anything in Ruby that you can use without requiring a statement. Any version of Ruby is fair game, up to and including Ruby 2. Then we have 'The Standard Library,' which is anything that ships with Ruby that you can access with a require statement.
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Next is 'Rails,' which covers any version of Rails up to and including Rails 4, the newly released version. Finally, we have a free-for-all category, and I'm not going to tell you what's in there—just choose it and find out. That's my advice.
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Here's our game board. So, we have 200, 400, 600, 800, and 1000. I guess we usually choose randomly who goes first, right? Someone write a random number generator quick. Your programmers—come on!
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What seems to be random? Dave Thomas, we'll slide you in first. I'm not here to answer questions—I'm here for advice on hair care products. You came to the wrong place? Yeah, I guess so. What do I have to do here? I have to start with a category, and at the top, is that right?
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Any spot on the board except for Jeopardy? That's right. Is it this stupid thing where you have to ask a question as the answer? Yes. I'll give you the answer; you give me the question.
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Okay, so you are off to an excellent start. Can you explain the RO St? Wait, I have an assistant. I had to bring in an assistant. Do you see my children's toy? I'm a dad, so I solve problems with children's toy ways. This is our buzzer, and Dana is helping me out with that. Dana, give us the rules of Jeopardy.
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Okay, so basically, you call out the category and the points you want. For example, if I were playing and wanted to play Off Topic, I would say: Off Topic for 200, which means 200 rubies. No, it's 200 Ruby symbols.
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Okay, so 200 rubies. Then James will read the answer, and all contestants must push their buttons. Whoever hits it first will light up, and the other two will be disabled. That person who has their light on gets to ask the question that corresponds to the answer.
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If you get it correct, you get that many points, and you get to ask again. If you get it wrong, someone else can repeat until somebody gets the answer or until James takes pity on you and gives it to you. Whoever has the most points wins. Is it cool?
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All right, let's start gently. I'll take Syntax for 200.
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The answer is the company named after this operator will be pleased to hear that the rumors of its death in Ruby 1.9 are exaggerated. Steve, what is a hash rocket? That's it. Where does the hash go? Okay, Steve, your choice.
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I'm intrigued, so I'm going to take Off Topic for 600. Wow, if you're going to do the weird thing, you might as well completely go for it. This is the technique of personally cooking food so that it can be finished later. His lesson treats now. Dave, what isn't freezing?
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No, not it. Why not? Not? I mean, she read the rules. I understand the rules.
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Steve, what is par baking or par cooking? We'll take it.
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Yes, what is par cooking? Steve, again.
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Let's do Rails for 200 rubies. This is the only command you don't need to prefix with bundle exec. Steve, what is rails new? I think we'll take it.
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What is rails in Rails 4? Any other command other than rails new has to be bin Rails whatever the command is. Okay, that's a fair point.
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That's the reason why I said clarification. See, we're all learning things here, including me. Okay, so we will take that. Steve, your choice.
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I should just push the advantage and go with Rails for 400.
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If you had a JavaScript event trigger in your application that is misbehaving after the 4, this new feature might be to blame.
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Steve, what is Turbolinks?
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Oh, how did he know that? Steve, your choice again. Let's just keep doing it for 600.
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The routing feature can restrict matches to requests on a specified subdomain or using a given protocol.
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Steve, what is constraints? Yes, that's it!
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All right, finishing off with 800. Just keep going. This no longer documented automation will reverse then reapply the last set of database schema changes. Dave Thomas, what is db:migrate:redo?
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There we go, it's db:migrate:redo. Now, Dave, your choice would you like to do Rails for 1,000? You sure? Because I don't know the thing about it.
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Yeah, I'm going to get it out of the way. Rails for 1,000. Let me know when it's over.
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This rarely seen flag to the association macros gives Rails the hint to reuse an in-memory Ruby instance. Oh, see, we took this out and you said any version now I'm like, what is it?
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Who guesses going once? OBD, what is inverse?
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There we go, what is inverse? So, inverse of is not out?
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I thought we were talking about the map.
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So, don't worry, inverse of is not going away.
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That's awesome. Steve gave everybody a yes.
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Your choice. I'll take Standard Library for 200.
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This library gives Ruby's cryptic global variables much more readable names. What is English?
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Steve, your choice. Let's do Ruby Standard Library for 400.
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This library can be used to generate random byte strings of hexadecimal characters, UUIDs, and more.
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What is SecureRandom?
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Yes, that’s correct!
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Right, he said he didn't know anything about the Standard Library; remember I watched Ruby Toas a lot.
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All right, Steve, does that mean I get half points? Let's do Core Methods for 200.
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This mixin isn't as popular as Enumerable, but it adds several methods for ordering objects. Dave Thomas, what is Comparable?
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Yes, it's Comparable, that's right!
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Dave, your choice. Oh gosh, um, next one down, whatever that is, 400 Core Methods.
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This iterator was added as an alternative to inject when the same object is always returned from the block. Dave, what is each_with_object?
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That's right.
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Core Methods for 600. This method flips some common iterators from greedy to conservative, allowing for the construction of infinite data pipelines. Dave Thomas, what is lazy?
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Yes, that’s the one.
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Dave, please come back! That's hilarious; we lost Dave Thomas.
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We'll add an Elixir category. Dave, we miss you!
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Do we have anyone who duck types as Dave Thomas? Ah, he went after refreshments!
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It's definitely debatable if two does allow that. I think it does, but it wasn't the answer I had in mind. For a second, I was afraid you were going to say you were thinking of enum 4, which is an alias that would have been really mean.
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All right, Steve, your choice. We haven't done any people in history, so let's do that for 200.
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These were the first two books published about Ruby in English. Dave, I would guess Programming Ruby and The Ruby Way right?
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That's correct. Programming Ruby and The Ruby Way!
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You know, this one's interesting because I could not remember which of these actually published first and I did my best effort because I had a suspicion it was The Ruby Way, but maybe I remember that wrong.
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And I tried to find out, and the internet just does not agree on which one hit first. They were really close, like I think Programming Ruby was published first.
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Okay, they hit very close to each other in 2001.
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Whatever you choose next, keep going down there, please. Okay, people in history for 400.
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August 19th, 2009. Steve, don't T.T. that. That was Dave! So now I have to guess the phrasing you picked. What is Why Day?
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We'll take that. What is the day Why the Lucky Stiff withdrew from the Ruby community?
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Yeah, same thing. Why? And there's that.
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All right, Steve, your choice. Let's do Off Topic for 200.
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Rising to the challenge 8 dictates that there can be no interference with the internal development of aliens.
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OB, what is the Prime Directive?
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That's it! Now what do you mean, that's on topic? All right, your choice.
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Oh yeah, points for... Up, sorry! Syntax for 400.
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This operator was added to support method-like parameters but has data in Ruby even after block parameters were enhanced.
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Dave, what is the stabby proc?
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Yes, the stabby operator, stabby land, stabby proc—yes!
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Dave, your choice. Oh great! Let's keep going down the syntax.
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This abuse of another operator is generally relegated to scripting hacks that involve quick and dirty filtering of data.
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Dave, are you talking about the flip-flop operator?
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Well, filtering of data, it's not very nice.
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Okay, Dave your choice again: why bother?
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I'll go for syntax again, 800.
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These expressions have an implicit 2s tacked on their results.
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Steve, what is string interpolation?
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That's correct! What is interpolation?
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Steve, your choice. Uh, let's do Off Topic for 400.
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Though their motto is 'Live Music Capital of the World', this city hosts a yearly Ruby conference. Steve, what is Nashville?
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No! Totally worth it!
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Anybody else want to take a stab? Dave, what's New Orleans?
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OBD, you've got a shot if you'd like to take it. Yes, Austin!
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Yes, yes, you are right! Yes, you're right! There was a question mark at the end!
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OBD, your choice again.
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Let's go for some abuse: People in History for 600.
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He holds the all-time record for Rails commits ahead of David Hein, Hansen, Aaron Patterson, and more. Steve, who is Jeremy Keer?
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That's correct!
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Jeremy Keer, and Steve, your choice again.
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Let's do Standard Library for 600.
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This library gives user-level access to Ruby's parser.
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What is Ripper? Yes, it is!
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Let's stick with Standard Library for 800.
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It got considerably easier to get the size of the terminal Ruby is running in when this standard library was added.
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What is Console IO? Yes, what is IO console?
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All right, bring it all the way up to 1000.
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Not it's primary purpose. This library gives us a great L banker for launching a web server. Oh, man, nobody knows about this one.
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The examples always use Python. What is gserver?
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Dave, you want to take a shot?
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No, I don't remember. No. I don't think this one's even documented in Programming Ruby.
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I mean, the library is decorated, but this use of it is not documented.
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What is... This is the one that primarily gives Windows commands.
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The examples always use Python.
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What is the programming library?
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No, I'm thinking of something else.
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What is abductive reasoning?
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Thank you all for your efforts! Let's take something from each of you and see who knows what!
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Let's finish off everyone right now. All right. Last question! Off Topic for 800.
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This parenting practice aims to send the message that all feelings are okay, even the worst ones.
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Dave, what is spoiling? I'm tempted to give him that, but no, it's not spoiling.
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Any other ideas? I have a bunch of vague thoughts, but none of them are cohesive.
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What is emotion coaching?
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Another Star Trek reference—yes! So the final explanation, we ended up with a tie at 4,400.
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Can we give the contestants a round of applause?
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Um, but this program, it's a Rails port application and it's on GitHub under my name, J2, it's Peril.
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If you want to check it out, play around with it, use it at other conferences—go for it! You're free to do it.
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I'll put the game file of this game there up next time there's working internet.
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All right, thanks, everybody. That's it. Bye!
