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breakout your wireframes and heat up those get repos, we’re ready to tackle topics ranging from accessibility to front end design, user experience and beyond. You’re listening to the drunken UX Podcast with your hosts, Michael Fienen. And Aaron Hill. Hello, everybody. This is the drunken UX podcast. I am your host, Michael Fienen. And this is episode number 114. For may number the nine. How are y’all doing?
Felice Libby de mio? Michael,
who the hell is that? That can’t possibly be my other other hosts,
I’m your other other host. Hello, I’m Aaron. Well, the other other hosts,
I’ll be damned other other hosts. You’re gonna be so excited because we are going to be taking a test tonight. Yes, we’re gonna see just how good you are at the scripts of Java.
Oh, I am betting I’m betting I fail. but barely.
these are questions designed there like the gotcha trivia question. Yeah, they
are. There are some old gotchas. A plane crashes
on like the river between Kansas and Missouri. Where do you bury the survivors? Like it’s that kind of question. Yeah.
Where do you bury? Survived?
It depends on Oh, they’re
you can 100% make the same kind of quiz for PHP? Or Python? Like they all have these kind of quirks?
Oh, I don’t know if you can see them, these kinds of quirks. Oh, they do that? It has has some idiosyncrasies,
Oh, yeah, that mean that goes on saying this.
This is bottled at 56% it is effectively cask strength, although I don’t think it’s like actually marketed as cask strength, but it’s strong. You’ve probably heard me say before I don’t really like Ardbeg a lot because I don’t like Isla scotches that much. Which is has sort of an asterisk next to it and I don’t like our big tin very much. I got into the Ardbeg and no, which is going to be coming up on a future episode. I had it at a tasting event and I really liked it. And I went oh, Martin Vegas has some interesting things.
And my friendly local neighborhood liquor store had this bottle of Corey wreckin at it. And I’m like interesting. I don’t know anything about this. So I said screw it and I bought a bottle. This Scotch is like a nuclear weapon going off in your mouth. It will and I am not kidding you. It will numb your tongue. You have two glasses of this and you can’t taste anything else. Like it is that strong. But it is so good. It doesn’t lean as hard into the that iodine flavour and those phenols that come out of like the normal Ardbeg 10 Or like a frog.
Sure it hits hard on like uncracked peppers, and like wet leather and steak. It’s got like this thick meaty quality to it like a smoked brisket type of flavor to it. It’s laced with like a little bit of citrus Not much, just a little bit. It hits you pretty hard on the nose but isn’t like it doesn’t attack you. It’s just strong. And it really it’s the kind of thing like I’ll drink a glass or two of it. And that’s all you need. But boy does it like it gives you a lot to chew on quite literally. I’ve got the Glenmorangie nectar adore nectar door. No, no, it’s door to door. I don’t know
Dior. Yeah, it’s D apostrophe or is that is that like Scotch saying it a third D apostrophe or
it’s Yeah, I think it’s is it slang for gold? I think I don’t know. Okay. Um, think?
Well, anyways, it’s, it’s very good. I think you’ve had it on the show before I haven’t.
Yeah. Yeah. That is my favorite Glenmorangie. Yeah,
it’s got a bunch of
great flavors. It’s it’s not to like
excessive like, in all the ways that your Scotch this evening is very potent. Mine is not. Yeah, it’s just a nice all around. Good time.
I was right, it is gold. By the way. Gold nectar. That’s what it means. So good. Margie, nectar, Dior, Dora. Or however you want to say that it’s finished in South turn casks. So it gets this very, very high sweet. It’s a very light like a creme brulee, a crispy sweetness on a whole high note.
I’m holding my glass up to the microphone so the audience can smell it.
Oh, yeah. Yeah, that’s actually I didn’t think about doing that with mine here. Everybody. here’s the here’s the quarterback and just take take a good whiff of that. Right. Like a deep way. I wish we could figure out how to let him do a tasting through the microphone, though. That’s, I didn’t pay for that USB connection, though. Yeah, I’m
running through two different audio interfaces. So I’d probably lose it somewhere. Yeah, yeah.
The DA converter? Probably. Yeah.
Yeah, I get it. Plus, it’s running through a cloud lifter. That just makes it more alcoholic.
Yeah. Oh, that’s true. Yeah, it would like distill it further. Well, you should definitely shouldn’t do that. Then you end up with like, 80%.
Is this like the infinite chocolate thing? Can we make infinite Scotch by pouring it through a microphone?
Like the Banach Tarski talks of scotch
and like, do it, you know, just run it through an amplifier and get more scotch? Is that how that works?
That would be great.
Well, here goes last number two for me, by the way. You’re gonna be toasted by the end of this, it’s gonna be bad. Okay, so it’s quiz day, you have arrived to class unprepared. You forgot there was a test you didn’t study. You don’t even have your pencil sharpened young man.
You’re describing like school to me.
So this is
for for the course for
This is a site and we’ll have a link in the show notes made by Marco Denic and Oliver jumpers out of I believe Austria, if my memory is correct on that. I mean, that could be out anywhere. I don’t know. But Marco is out of Austria for sure. All of her I don’t know. So all of her shout out to you, though. So these two gentlemen made this site. And it’s just got a very nice, simple multiple choice thing. I’m not going to read the multiple choice answers, even though Aaron can use them. And you just as I’ll read them, yeah, I’ll read them. Okay.
And as I read the question, it’s your job to see if you agree with Aaron or don’t agree with Aaron and then we’ll go over the what and why. So the first question is, can you guess what will be the output of the code below and the code is very simple. It’s a console log statement. That just says, type of na n Yeah, First off, what is in a N? N A M means not a number not a number. Okay.
Um, and that type of is
that’s like querying what the type of the argument is.
let’s get let me help. Everybody think through this. Right? What does type of do
if you had like a quote unquote, string, then it would be string. If you had the number five by itself, not in quotes, it would say number. I presume if you had an array, it would say array, but I don’t know that for certain.
I’m gonna and the word you’re looking for as primitive, right? Like, it returns? What what is the expression of this primitive? Yeah, yeah, that would be accurate. I’m gonna say,
I want to either say undefined or no.
Let’s go with no, gonna go. No, no, it is a number. It is a number.
the reason for this is a little complex and goes back to some stuff with floating point standards. The easy answer is that not a number is saying, hey, this thing is not a number. But because you expected it to be in number. The primitive that is assigned to it is one. So the expression of na n is sort of an abstraction of a number, even though it’s three letters. And even though type of returns a string, that’s the other thing you always know type of returns a string expression every time so it’s not literally returning a number all returning.
You know what? You know what this feels like? Since since today is well, when recording it, it’s technically May the fifth, which is the Star Wars thing, right? May the fifth be with you? This feels like when fans of Star Wars talk about the whole parsecs thing from episode four, when Harry Han Solo was talking with Ben Kenobi, and he’s saying how he did the Kessel Run and like, like so many parsecs
and then trying to say like, like, explain it backwards.
let’s do another one. This one is, do you know what this will output from this code? And now, it’s console dot log, type of type of one. That’s right, literally, to type of the type of one.
Do you know why? You know why you don’t those parentheses with type of? No, it’s because technically type of is an operator. It’s not a function?
Of course it is.
It’s yeah, I mean, that’s, that’s why, yeah, of course it is.
Okay, so I’m evaluating this right to left. And first type of one. I’m zooming in right and left. I’m like, when you’re because I’m imagining even though we don’t technically have parentheses in there. I’m imagining that it works similar to a function where it’ll evaluate
like, okay, kind of like, peds Miss thing, right?
Yeah, yeah. So like you have you have type of you have the first type of is going to ask Hey, what’s what is your, what do you evaluate to so I can get your type. And the cycle is gonna say like, I don’t know, hold on, because it as the query, its arguments. And then we just keep going, just turtles all the way down. So, because of that, I’m gonna go right to left, in this case, I’m kind of like you’re stacking, you’re making your set, you’re pushing things onto the stack, and then popping them off once you get to the end.
It’s a might primitive name. Yes, yes. I’m just reinforcing what we used from the first question. So sure, sure. So yes, yeah, it would return a primitive name. We’ve we’ve assessed that. Yeah.
The question is, does type of primitive name return? Does it evaluate it to a string? Or does it evaluate in different way? I don’t know what different ways it would be. I’m gonna say that it evaluates it as a string. I’m gonna guess string
strings. Is that your final answer? Yes. Man, we can we do lifelines for the Ruby episode? A guess? You are correct, sir. Michael, future Michael insert some applause here. Yes. So you’re you’re right. So type of one is going to return number, but it’s returning literally the string number. Yeah. I realize I gave you a hint to that when we were discussing the first question that it returns a string representation of the primitive name. So yeah, type of one comes back as number.
And then type of, quote number quote is string. So that is entirely correct. Gray, cod, this one is is fun. So console dot log, all of these are console dot log for what it’s worth, you’re just trying to determine what the output of the expression is. So so this is just an expression. Right? And it’s a question of three greater than to greater than one?
Yeah, three space greater than space two space greater than space one.
And is it true or false? Right. Okay.
So similar to last time, I’m evaluating right to left, two is greater than one, which is true. So the question is, is three greater than true?
And I believe that’s going to be false. And false? Yeah, false. Yeah. Except I do think you did it backwards. But you got to the right. That the left to right. So in this case, it actually evaluates. Yeah, left to right, you You went right to left again. Okay. But because it’s evaluation, right, the left side is evaluated first. So three greater than two is true. But true is not greater than one. Because true is not a number.
I guess the difference is that in the case of this with going left to right, you have all of the information necessary for the greater than operator to evaluate. So it can just resolve. Whereas with type of type of the first type of can it fully evaluate the second type of unless it called it an operator, I guess? I don’t know.
So there is a secondary thing going on here, too, that’s worth pointing out, which is because the greater than operator expects a number, it does try to cast What is there to a number. So strictly speaking, it’s not evaluating true, greater than one. It’s evaluating one greater than one, which is all it’s still false. Like that’s, that’s still a false statement.
All I was, I was, I guess, right? But technically wrong.
Yeah, it’s an ES six thing that, you know, will get transpiled if you’re using Babel or something will handle making it like string concatenation.
So, so I didn’t know that it would evaluate stuff that might have changed my initial answer. What I see is, I know what string is. Dot raw means that it’s a like a class method. In this case, it’s like utility method. The backticks I’m presuming is a means of like, indicating a string argument. I think it’s weird that you have neither a space after ra nor parentheses, but I’m just going to run with it.
The syntax is a little unusual, but it is valid, that the options here are important to
Yes, yeah, So option one is no spaces. Hello, Twitter, backslash n world. The second one is Hello, Twitter, and then a carriage return world. Why would there be a carriage return there? backslash n backslash it newline. Now, the third one is Hello, Twitter space world. And the fourth one is Hello, space, Twitter space world. So I know it’s not the fourth one because there’s nothing to indicate that there should be a space there are between both words, right?
So the third one seems possible. And I have to think does, would string.ra eliminate a backslash n and not evaluated? And it’s possible, but it seems unlikely. The second one, hello, Twitter, carriage return world would mean that it’s evaluating the string or violating the backslash n. And my thinking here was that it’s probably not because it’s raw. And so usually, when you do raw, it’s wanting to take exactly what’s in the thing, like as is and not evaluate anything. So I’m going with the first one.
It is yes, that is the correct answer. I’m gonna put on my game show voice this week. Yeah, and so basically exactly what you stated, which is then dot raw takes a template literal and will process anything in it. But raw won’t do any escape sequences, like backslash in and will just return what you have. Basically, it will evaluate variables if there was a variable in there, but it will not evaluate escape sequences. Right. Next five, can you guess the result of God? So yeah, so we have some parentheses, B plus A plus, although
no, it’s not B plus A, it’s the string yen that literally plus the
actual string B plus the actual string a plus plus space plus the string a plus the string a, and then to lowercase. Right? And the answer is either banana, ba, banana, or an NS.
Alright, so again, process of elimination here. It’s not a non US, that doesn’t make any sense. Because why would you choose to be
an ad? Right? The first one. The first one kind of clues me into, like, oh, right, if we don’t have an argument there might return not a number, right?
And then being two lowercase that would make the ends lowercase, and having two A’s there. Also, you know, that would make sense. Um, the second one is, I just presumed that not having an argument, assuming it evaluates, it’ll just do the best that I can. The third one, even though I know that’s the correct answer. I don’t think it should be and I’m not going to pick it. I’m not there are four lights here for lights. So I’m going to pick the first one knowing that it’s
wrong a in a in a yes, I forgot. Yeah. That was a mistake. Yeah. Can
you do the why? I want to know why were the last day
ago. Yeah. So I worked out basically the same thing that the plus plus is going to generate an n a n error. So not enough to
be clear, I wouldn’t have guessed that a generates na n. I’m inferring that because two of the options have Nan, and then makes a silly joke.
So here’s what happens. First off, you end up with B plus A, which is VA, then you end up with B plus plus the string a. So then this is where things are basically breaking because plus plus string a, it doesn’t know how to evaluate that. And so you end up with n a n. It’s saying, Oh, this is not a number. You’re trying to add a to nothing. So it’s because nothing plus A equals not a number. So then you so now you have BA plus na in. So there’s your bond man. And you’ve lost that second A.
And then the last step is you add that last day. So now you have banana with two capital NS and the two lowercase, takes it all down to lowercase. So it’s a it’s a case of the expression plus plus a. I thought, when I was looking at this, I was like, well, plus plus, I just thought would evaluate to not a number because there was nothing in there. But I forgot to take it as a whole expression. What it’s actually doing is trying to add plus plus a to the BA and it drops.
Is this your king people
this? This is a weird, like, I don’t know how you could I mean, everybody’s got code for something. I don’t know why you would run into something like this. But it’s an interesting, understand understanding of how string concatenation works, basically, and how you’re concat. And you’re using a plus symbol to concatenate strings. Yeah, but if you do it wrong, it does evaluate to numbers. Like it’s so it defaults to a math operator when it can’t figure something out.
So in Ruby, you would get something like this, you’d probably get, you get an argument error, because you need to have I’m pretty sure you get an argument or because you need to have something there. But generally speaking, what it would probably do otherwise, in other situations, it would try to evaluate it, we presume that since a string is calling the operator after it, or a string is calling the method after it that you’re going to want to have a string as the result. So it wouldn’t infer that you wanted a number there.
Okay, so the next one here, this one’s got a couple lines, first, we have an array, let array equals 123. And array, one, three, and then we say, array index six equals nine, right? And then we say, array index five, right? The first statement,
let array equals and then it’s array short notation. 123. That’s straightforward. I know that’s valid. One second one is
array to array two would be three integers, zero, and guest.
Undefined is the correct answer. So yeah, we ended up because it basically backfills the rest of your indexes with unknown. So it does actually treat it like a property. Yeah, yeah. So it will backfill those arrays, and it will also increase the length. Like if you did a length on that, it would return length seven. Yeah, I wouldn’t, I wouldn’t have assumed that. Yeah. So it tries Yeah, it does. In that sense, it does allocate all the rest of the indices up to that point out. Okay. You know, the output of this code, okay.
This one says the number one, so it’s a number of primitive actual numbers, plus votes, two plus votes two. Yes. I think I think that one plus a string representation of the number two, would probably evaluate to not a number. And then you would have not a number which we know From Question one is considered to be a number, even though we don’t want it to be one. And then you can have that plus a string. So I’m gonna go with not a number. Yeah, and,
and you’re getting it wrong right now. Boom, yeah, that’s 122 Oh, really Holy shit. Because and here’s the here’s the whole reasoning why it, it will, when it goes to figure out what it needs to do. Rather than failing, it will say, Oh, no, we have two objects here that we can do something with. And because I don’t know what the string is, even though it could conceivably try to like do a two integer on it or something, it will treat the number as a string and concatenate them.
And then the two plus two is just a straight string concatenation. And so you get 122. But it is the string representation of 122, not a number representation of 122.
So so it’s coursing based on the arguments you’re passing to it. Basically, it’s like reverse duck typing.
I didn’t write the runtimes. And the device layers will store
that’s like, it barks and it has fur, but you feed it duck food, therefore, it must be a duck.
Okay, next one. This is this is such a trap question and explaining why is going to be fun.
false. Imagine that instead of point one plus point two, imagine it was just one plus two plus two equals equals equals three. Is that true or false?
What like I said, in the normal world, that should evaluate left to right. And it would be one plus two is three, and then equals
equals three. Right? And
that true? Do things? Oh, it should be true. Should be true. Yeah. So point one plus point two equals equals point three.
To be true. prints, ostensibly.
I don’t know why I’m helping you. You’re working through this. Keep going.
Wait, I’m opening up a Ruby code. No,
no, don’t do that. Don’t cheat. I’m not cheating. Actually. This problem shouldn’t be in Ruby two. Can we get a meme? Can we get like the the angry? Why, you know why? You know guy mean with with point one plus point two.
But I picked false because I was like, this has to be dumb. Yeah. It has to be ridiculous. And so that’s why it’s gonna be false. So false is correct. It was like a spiteful, yeah, answer that.
So So why the whole reason behind this just goes back to like the general problem with floating point math, which it is 2022. And it turns out, we are still terrible. Floating Point math.
What’s this? We business? You got a mouse in your
You’ve got a screenshot right there in the channel that shows you that it’s been it’s been
What some people will do is if you need very, very precise math, multiply it out to integer so in this case, take it times 10. So you would say one now we would be in one plus two equals three and that is true. And if you needed output that you would then divide it by 10. That’s the easy solution. If you’re dealing in currency This is an obvious problem. Actually, that’s that’s a really good point. The Superman three problem right
Exactly, when I’ve done Rails apps where we’ve done e commerce transactions, the it is like the best practice is you always store dollar values in cents. Yes, it’s like it’s a predictable calculation. You never need fractions of sense, smallest common denominator, right. And you just always track it and cents. And then that way, when you have to present it to the user, you just divide it by 100. But that avoids that site completely sidesteps any possible floating point issues.
The other thing you can do is run a to fixed the number primitive has a, a method called to fixed, which is basically a rounding operator that will return a precision of however many decimals that you’ve placed. So that is another way to evaluate it. The thing is, you know what to fix returns a string, just know that I,
I stand corrected I did earlier with the screenshot I sent you was one plus two equals equals three. But if I do 0.1 plus 0.20, hold on. I did three. Let me try it with zero. Satellites. Yeah, so it’s still 0.1 plus 0.2. Still does that long string you just shared with the four on the end. And point one plus point two equals equals three evaluates to false in Ruby as well.
interestingly, 1.0 plus 2.0. equals equals 3.0. evaluates to true.
Yes, because zero, doesn’t. It truncates it to one plus two at that point. Sure. So the last thing I’ll throw out there about this, because Aaron, I know you’re probably old enough for this. Remember when it became a really huge deal when CPUs got dedicated? coprocessors math coprocessors floating point? Oh, yeah, it was like that was that was a thing. And there was at one point, you could buy daughter boards for like old 380 sixes and 480 sixes to add a floating point processor specifically did that. So all of you people younger than the age of 30? You’re welcome.
I did just also check 1.1 plus 2.1 equals equals 3.2 evaluates to true,
okay. All right. Ninth question. We have two constants, I’m setting two constants, one constant is called is true, the other one is called as false. The first one cons is equal to true equals equals an empty array. The other one is equal to true equals equals not an empty array. So the
first one that the variable name is true is true, or sorry, the constant name. And the second one, that constant name is false.
And then the the output is, what is is true plus is false.
Okay, so I actually don’t know what the behavior will be. But I’m going to like walk us through it. And first, I’m going to infer some things here. So logically, true equals equals an empty array. And true equals equals not an empty array. One of those is going to evaluate to false. I’m presuming. If it doesn’t evaluate to true or false. I don’t have any idea what its gonna be.
And I have you walk through walk through a Boolean process, right? In terms of when you think about what means true, and what means false. What would cause one of those to be true and one of those to be false? I have no idea. I could guess maybe like, like, I mean, maybe an empty array might evaluate to false because it’s empty. And so if you have sometimes true equals equals false, you get that if we get false,
and then true equals equals the not the bang, the exclamation point means not. Yeah. And so you would have true equals equals not.
So what is it? Yeah, what does the bank do? Invert invert value, there you go. Also, there are a lot of times
the bank will not only invert it, it will also coerce it into being a Boolean. So there’s a trick in Ruby and I think you can use other languages to where you do double bang, and then do something. And that coerces whatever it is into being like a firm
Boolean. So, you’ve got four options here. None of them are false. Yeah.
All right. So we have one, zero quotes true. And then actual truth, room value. I like how the third one is quotes true. It’s like like scare quotes saying like, Yeah, true.
Yeah, um, Okay,
so So my initial thinking is that one of those two constants is going to evaluate to false and one is gonna evaluate to true. And I’m inferring that because want they’re the same with the exception of the Boolean inverter. The weirdest possible circumstance, I could think of where this would be true, or sorry, where this would work is that the first one evaluates to let’s say, like, undefined or something. And then the ladder gets coerced into being a Boolean, because of the inversion operator.
So I think they’re like if you take a Boolean, true plus a Boolean false, or a Boolean, true, plus, whatever, undefined or something. Both of those are going to be weird. I’m sad that not a number isn’t an option. Because I feel like that’s a good place for that. I don’t think it’s one.
It’s probably not zero.
I’m gonna pick Boolean true, because I think that’s the most ridiculous possible.
Okay, Boolean true. Oh, my friend. 00. Yeah, cuz, remember, Boolean evaluate to zeros and ones. And what’s happening in the console log. Remember, what is the plus sign default to? It’s a math operator. Yeah. Yeah. So it is immediately it coercing you, I think you use that word just a second ago. It coerces the boolean values into zeros and ones. And you were absolutely right, in that this, these are backwards, that is true equals false and is false equals true because of the bag.
Okay, so they both did evaluates an empty array comes back as false. And so true, doesn’t equal false. And so an empty the opposite of an empty array is true. So true equals true. More importantly, like, true,
I mean, both of those could evaluate to false. Because true doesn’t actually equal either of them. True is not an empty array, nor is it not an empty array.
So Ruby knows, true and false, right? Like, that’s the thing does Ruby have and
actually, true and false are instances of true class and false comm. Okay.
Does Ruby have an understanding of truthy and falsy if I say it that way?
Yes. So there are truthy and falsy.
Yeah. So that’s kind of what’s happening here in that you can set a variable to an empty array. And it’s not undefined. It’s not no, it’s an empty array. But that still evaluates in the context of a Boolean, to false. Because an empty array is nothing. Right? An empty
array is like it’s the sad van. Yeah, I think of I think a truthy and falsy is like happy and sad. Like a truthy value is like, a positive number, not because it’s like positive is happy, but just like you have something Yes, I have something I can work with. Whereas like zero or empty or nil are all false. Because, you know, it’s empty, it’s gone.
And this is actually a really good example of there’s an MDN doc on this that gets into like, what is truthy, right. And so the list of what is truthy is huge, like, it’s long, the list of what is false, it is very short. So it’s one of those things of like, or rather, I should, I should say that backwards. A lot of stuff is truthy, very few things are falsie. But when you evaluate it, it’s the opposite. which I know sounds like it doesn’t make sense, because a quarry record is also the name of a whirlpool, up in Scotland, in a bay, and it’s spinning my head around right now.
No, it’s just this notion that there there’s a very finite list of things that can be false. But that very finite list of things can also encompass a lot of stuff so to speak, to false zero, negative 00. In empty strings, empty array is null undefined in a in, comes back up. As long as it’s got a value, a string value, a number value, an instance of an object, even if it’s empty. An instance of an object is truthy. So if this notion of a boolean true or false is a literal, either zero or one, or true, false, that’s it. Those are literal, true false. bullions.
truthy and falsy basically is sort of like an is set or is not set. kind of mindset. Yeah, that’s I agree with that. And so this is this question is playing with that idea. And so if we know that an empty array is falsie, and returns false, true equals equals false is false. and not false is true. It’s like It’s like multiplying two negative numbers, right? A negative pleasant or a negative times a negative is a positive. And so a false false is true. And so true equals equals true.
And you end up with when you do that additive action on the console log zero plus one equal, or I’m sorry, zero plus zero equals one. Rev. Zero. Got I’m, I’m all over the place, by the way. All right, one more, we have the last question on deck. I’m really glad this came up as the last question, because it’s kind of fun. You’re gonna complain, but it does make sense in its own way. So what we have is an array, an array called numbers. And in that numbers array are only three numbers.
It’s not just an array. It’s a constant.
Yes, that’s what I overlooked. The first I’m not being manipulated, right. And the numbers in the array are 33, two, and eight. And they’re all primitive numbers that are all just plain old numbers, no funny business. Then we do a numbers dot sort, which is a prototype method on the array primitive. And then we log out index one number, and
so I got this one. Correct. And afterwards, I was like, that was easy. Why is that one supposed to be puzzling or whatever? And I mean, the answer is eight.
Which would be the second element of a zero indexed array.
Now looking at it now, seeing that it’s a const.
I probably would have hoped that it was to, do you want to read and think like this? You want to go I think you want to go back and redo what you just said? I swear it answered, ate earlier. And it was correct. Or actually no way. No, I answered 33. Damn, I shouldn’t have said anything. I should have no, right. No, no, but but like thinking about that now. Like, why did I answer 33? No, let’s I don’t know. Yeah, I think we should go with the wrong answer, which is eight. That is the wrong answer. Yeah. Tell us why. Why do you think it’s a?
Because if I’m assuming that, like, there’s some like Meta reasoning happening here, like this quiz is full of God know
that what the quiz is doing? Tell me why you think it’s a?
Well, I don’t seeing that it’s a constant. I don’t think it should be eight. I think it should be two.
What if I told you the fact that it’s a constant makes no difference whatsoever? Then, what is even the point of anything I?
Like why, why if you can, like if I, here’s a good example, if I set a constant, if I’m getting API data back from like, a, like an Ajax request. And I’m like, Okay, it’s very important that this array of data is in the order that it’s in because it’s like, test answers or something. And so the sequence is very important, and then make it a constant. And then something somehow manages to run sort on it. I would not want that to be actually sorted.
right? So you can’t you couldn’t assign something else to like, if you did const numbers equals an array of 3328. You couldn’t later on say numbers equals
five, right? Or numbers equals quote, numbers, quote. Right, right. I love it. This is the best question to end on. So let’s go back. So yeah, if I tell you the word the the, the assignment of a constant to numbers is absolutely irrelevant. There is one in the up in the next set of questions, where does matter? And so that’ll be fun. But it could be ver, it could be let numbers equals 33 to eight, and we sort those I
know that I know, I got this one. Right. That was the first time I did it, right? Because I didn’t see const. And so I thought it was just a very you got it right on
at first then. Yeah. So what is your as it runs like this? I think
it was the first question. And so I didn’t know these are going to be gotchas. I thought it was a nice quiz. Um, I think that what I would expect it to be is to, as I would expect the array to be immutable.
Okay. So yeah, so you think line two does nothing? Secretly?
I’m pretty sure it’s actually
yeah, I mean, the answer is yeah, not too often. Obviously,
but I’m afraid that’s going to be 33. So,
you are right. I mean, you’re wrong. But you’re right. You know what I know you’re not getting, you’re not getting credit for this question. You’re getting it wrong, because you don’t know why you got it right in the first place. And I’m the grater. And I’ve had the quarry wreck, and I’m sweating and unbuttoning buttons.
hell let me pass that to you know what? No, no, I want to see if if because you use your use your primitive brain? That’s not an insult. Why? Why would 33 and in an array of 33, two and eight, if you sort that array? In what condition would 33 end up at index one and as a reminder to everybody indexes start at zero, so we’re talking about the middle isn’t a second one. Yeah. So that will let me do this is the order 833? Two or 233? Eight. If you run a sword on that, which one of those is right?
This is like a this is a bonus. This is your extra credit question. Okay. Yeah, it, it should be two 833. No, no, no, we know it’s not, you know, 33 is the middle number. We know this for a fact. So it’s either 233 eight or 833? Two. Which one? Yeah, but
see, you’re you’re asking me like, which one do I think it is? And I’m trying to apply reason to this. Like, if I ran sorta, this is what I would expect it to do. If we’re saying,
Have you run sore, and you know, the middle number is 33. You know, it can only be one of those two? Well, there are four lights. I love this episode so much already. Which
I refuse I refuse to accept the premise that sort of should return 33 as the middle night.
You know, when you hear why it’s gonna blow your mind. It won’t know. I promise it well. 2338 or 833? Two, which one? To 30. Okay. So let’s assume that’s your reason. Why not that the interest of it. Let’s assume that’s right. Okay. Yeah. Now logic it out. Why would 33 come before aid? If the order is 233?
Oh, God, I got it. Because it’s really them as a yes.
I don’t have to add in. applause I’m doing it myself. That is exactly why that is the dumbest thing sort how, because in a ration, anything, our soul
was powering so much of the internet, right? But it’s like, why is there? Why does it not automatically apply? Like I could see it being like 33 First, because maybe you like sort defaults to descending instead of ascending. I’ll give you that. But it should be evaluating it as integer primitives, because they’re coming in as integer primitive.
Let me give you an example that might ring true for you. And as to why this is the case. Have you ever had a folder full of like, maybe old mp3 files that are like badly named with like, artists track number type stuff? Yeah. Yeah. And it starts sorting a bunch of your songs, and lists, the songs that are in the, you know, the tins show up before the Yeah, too. Right, because it becomes like a two song. But it’s evaluating the ones first. Sure, but in
that case, though, you’re dealing with a file name, which is coming in holistically as a string, right,
right. But the array has the same problem, because the array doesn’t know what data types are going to come into it. So they have a good example here of an array that has a string one, a boolean true, a number 55, a float of 1.4 to one, a string of foo, and an empty object. And it’s like, if you run on that, what would happen? Yeah.
Okay. So in that case, I think that you go with whatever. Like, in that case, it makes sense to go with whatever primitive type is the one of the first element. And so like comparing them all as strings, but if you have an array, that’s all integer primitives, it should evaluate it like as integer primitives, and not as strings.
over What was my score? Wait, wait, wait, what was my score?
Wait? Oh all right, is everybody ready for Aaron’s final score? Because I’m ready to give it.
Okay. So I believe that I said I would fail. But
no, no, you passed. You got a six Wheeler sent. That passes? I mean, isn’t that a D? I think that’s that’s like the lowest D because I think a 60s F is it’s been a minute since I’ve been in school. But no, I think a 60s of the I’m going to ABCD that’s for units. And so, okay, let us know,
I think my my school did 6565 was a cutoff point for failing, I think
my problem is, there are a limited number of questions in this test. And so I’m going to tell you go take this test, let us know what your score is. But you will get a lot of the same questions. undoubtably. So you’ve probably heard some of the answers. So pretend like you don’t, and just try or wait a couple days, wait a couple days after this episode, then take the test and see what score you get and share it with us.
But this is fun, this is fun stuff to like, figure out the idiosyncrasies of like how coding. And it’s important because I think, at some point, we all fall into one of these traps of stuff not evaluating the way we think it does, you know,
audibly that that last chunk about how you know, an array sort, how sort evaluates everything as a string before it sorts, like that’s one of those things that man until you ran into it, it’s just not expected.
If you have an array in Ruby, if you have 123 in an array and you sorted, or a sorry, you have 233, eight in array and you sorted, it puts it to 833.
Don’t be fancy with me, come
on. If you do, if you do like ad, ie, each has strings and you sort it or add any sort them, it’ll make ad e as the result. If you do an A string, comma, two comma 33. Any sort, it throws a argument error, because it doesn’t know what
figured out the fundamental difference here. And it’s like, it’s reverse duck typing. It’s like, um, you’re getting duck foods. So I guess you’re a duck, rather than you’re behaving like a duck. So
that means you’re Yeah. Interesting. Well, take your test for lights Michael, four lights. Listen. I know this reference, I respect this reference. And for that, you can take us out on social
calm and tell us how many lights through our Twitter or facebook.com/drunken UX, or see pictures of four lights, as there
are primitive cursors or precursors? No, I’m sorry, it was precursor.
instagram.com/drunken UX podcast and please joke. Come and Go and support the show and help us pay for transcripts dark index.com/support
which will redirect you to our Patreon books. I hope you enjoyed this there’s going to be a second part of this this is officially part one. There is another section of these things I think will be fun. And I can’t wait to go through them because I had a lot of fun in the show. I just poured myself another glass quarry wreck and this is probably a terrible decision on my part, but I’m doing it because a it’s delicious. b
I’m hot. That’s like eating airport food at the destination airport.
You know I I used to do that in Boston because it was the first sushi restaurant I hit. And it probably was terrible, but it was still better than Kansas sushi. So I still always stop there and got sushi, folks. Ladies and gentlemen. I hope you keep your personas close and your users closer. Bye bye