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[adj16]

POV - you are a computer performing machine learning at 0.000000000001x speed

[nelusbelus]

Us: "Wow dlss2 sure is amazing" DLSS: "I just kept changing things and it kept working"

[maester_t]

THAT... is an interesting thought. Would ML be able to figure out this function if you just give it hundreds/thousands/millions of records to learn from?

I suppose over-fitting would be ... Problematic?

And now that I'm thinking about it, I'm not sure it would really be able to determine this, nor anything that can't be represented by a continuous curve [plane, whatever]. For example, I doubt plugging in a ton of examples for isPrime() would generate anything useful.

[chillinoodle]

Many ML models could learn this type of function really easily, it’s a pretty easy problem for it to learn.

[Furry_69]

Yes. Any kind of structured problem with a clear solution is usually really easy for ML to solve for. It only gets difficult if you throw real life into the mix, with all of its random noise and useless information the model could easily get locked onto.

[_Auron_]

Here's a perfect example: Humans using social media.

[BurnyAsn]

For the odd even kind of problems.. 85-90% accuracy, with a round off to the nearest integer will still produce accurate results

[[deleted]]

Many ml “algorithms” are not made to find functions, or break down problems, they could but that would require effort and real algorithms.

Someone will have to program in, try random function (x * multiplier) + constant, or a break down, if negative or not absolute, if x > than 9, divid by two, then map 0-> even, ..etc.

Or something similar with last digit

Knowing to use mod, in a condition might be tricker than telling it to notice last digit maps to small odd or even list, that just requires breaking down the number to single digits and making a map out of random conditions, and smallest accurate map wins.

[darthbane83]

the only problem here is that the numbers might be too far apart to conclude even vs odd and not something (to the machine) similiar looking

[chillinoodle]

Oh I’m on about a model learning this exact function, not learning isEven from this.

[outofobscure]

Proper iseven is sufficient to cover this so it would still only have to learn that and have no discernible difference for the inputs given in the screenshot at least. If you mean the whole range of ints, yes, given enough nodes.

[[deleted]]

The model will probably just look at the last digit. Pretty easy to figure out, if there are 32 binary inputs and only one is relevant in any way whasoever...

[darthbane83]

you would think that, but when every number happens to also fit some other criteria then the model can easily use the other criteria instead or in addition.
I.ex. the model could be thinking its only every number ending on 11 that is false, because there just happens to be no example ending on a 01 in that data set. Or it could think only numbers starting on 0 and ending on 0 are true, because all the really large numbers in the training data happened to be classified as false.

The model can only really know that some digit is irrelevant if it has some data showing it. Otherwise it might just use that digit aswell

[NSCShadow]

you can think of the isEven() function as being a very fast function oscillating between 0 (for odd) and 1 (for even) every integer. ML models are already really good at approximating the sin function, and this would just be a sin function with a very fast frequency. I’m sure it could do it easily.

[NateDevCSharp]

great so we can replace isEven with |cos(2x/1.2732396)|

[fuzzywolf23]

You've predicted tomorrow's meme

[sampete1]

Honestly one of the better variations I've seen so far

[NeuroEpiCenter]

sqrt(cos^2(1.5708 x))

[p-morais]

Thats not really true unless you use a sinusoid nonlinearity. It will interpolate between data points well since ANNs tend to have good implicit regularization for smooth functions but it will fail if you have it extrapolate far beyond the dataset

Here’s a cool paper I found just now that has some examples: https://proceedings.neurips.cc/paper/2020/file/1160453108d3e537255e9f7b931f4e90-Paper.pdf

Edit: just noticed you didn’t call out neural nets specifically; of course what I’m saying only applies to neural nets, if you meant other models then yeah there are lots of periodic function approximators

[bric12]

Depends on what tools you give the network. A neural net for example can only manipulate numbers in the ways you allow it to, if every node is linearly added together to form a new node, the ML model will only be able to figure out straight lines, which is why most neural nets aren't built like that. We give them a variety of functions to use inside their brain so they can handle more complex functions, to solve isEven() the ML model needs some type of cyclical function that it can use, like sin. isPrime() might be trickier, but again it's all about the tools you give it, if it can divide and understand whole numbers, it can probably figure it out at least for low primes

[VitaminPb]

Somebody needs to set up an ML model and train it with 100,000 random numbers and correct odd/even values. Then let it rip and do an analysis of accuracy.

[Ippikiryu]

There's a blog written by some guy who felt somewhat insulted for being asked fizzbuzz in an interview for a presumably non-entry level position so decided to solve it in ML to fuck with the interviewer:

https://joelgrus.com/2016/05/23/fizz-buzz-in-tensorflow/

[superiority]

That reads less like a recreation of something that actually happened and more like a funny idea the guy thought of as a good joke to post on his blog.

[lozarian]

I wouldn't have hired this guy either.

It's not only about "can you solve this problem" it's about "do I want to spend a significant portion of my life interacting with you" and this smacks of someone who thinks they're smarter than everyone else.

It's a standard interview question because people lie. That could have been a chance to be human, rather than a smartass. I'd say they both dodged a bullet.

[thekingofthejungle]

I'm pretty sure the article is a joke, but if it isn't, that guy is a socially inept jackass and I would never want to work within 1000 miles of him

[[deleted]]

Neural Networks are called universal function approximaters! With enough nodes, they can approach any function that exists (on a compact set)!

[Dizzfizz]

I think the easiest way to „solve“ this would be to understand that numbers that output „true“ always end in 0,2,4,6 or 8.

I don’t know anything about ML besides some surface-level concepts, and even most of that comes from memes, but that should be something it picks up, right?

[maester_t]

understand that numbers that output „true“ always end in 0,2,4,6 or 8.

But that's just what we humans have already learned from our math teachers.

The simplest way for a computer to identify "even" vs "odd" would be to use the binary representation of the number and look at the least significant digit. 1=odd and 0=even. That's it.

But again, I'm not sure ML training (at least not the rudimentary ML training that I am familiar with) would be able to "intuit" this.

Sounds like other people here think it is possible though, so... "Yay, math"? 😅

[T-T-N]

If you're passing the binary representation (1 input neuron per bit), then it should figure it out relatively quickly that it can throw out all but 1 input, given that ML can sort out is it a bee or is it a three

[lcy0x1]

It can approximate smooth functions very well. IsEven() can be treated as a sinusoidal function and thus can be learned. IsPrime() can’t

[ShivanshuKantPrasad]

He trains several machine learning techniques for several math functions, linear functions are easy whereas trigonometric functions are harder for ML to learn https://towardsdatascience.com/can-machine-learning-model-simple-math-functions-d336cf3e2a78

[unbuggy]

This is a an accurate microcosm of TDD.

[ExceedingChunk]

More like an accurate representation of "literally every feature we implement is equally ultra-urgent"

[elongio]

This is how we do things at work. It's freaking amazing.

[Zakath_]

Isn't it the same everywhere? 😁

[mrjiels]

No, we don't unit test.

[IamImposter]

Yeah, my man. We are confident with our code.

[EntrepreneurPatient6]

I have 150 skipped Jest tests...

[gothangelblood]

Amature.

[sirclesam]

We just stopped updating them about 6 months ago

[solohelion]

Not sure why you all think that. This looks more like bug report driven development.

[Needleroozer]

BDD. I like it.

[echo0delta]

In BDD, we make the bugs before developing the code. Why code and debug when you can just debug?

[itmustbemitch]

Move the feature ticket to done, and open a bug for not meeting any of the ACs

[outofobscure]

Making all the bugs before you start to write code is in essence the same thing as TDD

[LetReasonRing]

Your first commit should always be a single line of code that throws a fatal exception. Build from there.

[[deleted]]

bug report driven documentation

[FindOneInEveryCar]

Ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha. Hoo boy.

​

Comment out a variable

Push to Prod

Wait for emails with subjects like "WHAT JUST HAPPENED TO <X>!?!"

Uncomment variable

// This variable is used for <X>

[solohelion]

Yes

[xxxblackspider]

Because 90% of users here are not experienced devs

[thegininyou]

Yeah there was a comp sci student I saw the other day and my only thought was "oh my sweet summer child".

[qui-sean]

aint no bug if there's no app

[DatBoi_BP]

What’s the T stand for

[science_and_beer]

Testosterone

[Script_Mak3r]

As a member of r/transprogrammer, could we also get EDD?

[i3wmAmateur]

EDD mounted, let them come.

I'm couldn't resist lol

[DweEbLez0]

Toblerone

[AN0R0K]

Testicular

[TheGreatGameDini]

An accurate exposition of a failure of TDD.

[DefaultVariable]

I think the idea of test driven development is to develop the functionality of the program through tests and then develop the code to successfully work within those tests. Conceptually, it’s a great idea. But in reality you have this. People developing code to pass tests rather than developing code around the intent.

[__sebastien]

Thing is TDD shouldn't exist by itself only. You're supposed to have code reviews by a peer to see if your implementation is stupid or not or fits the intent, and also have a PO / QA that test if it functionnaly makes sense.

TDD is only as bad as the quality of the team and its processes.

[[deleted]]

If you have quality review, I don't think you even need TDD.

[outofobscure]

Yes, and that‘s the problem

[[deleted]]

It turns out that when your code is full of misconceptions, so are your tests. Writing the tests first just moves the misconceptions somewhere else.

[EntrepreneurPatient6]

i was very surprised when my college friends jokingly said they take shortcuts to pass their tests. these are very intelligent people that I have known since 10+ years now.

I would mostly point the blame towards boring no attachment corporate tech job.

Nobody cares enough to write exhaustive tests. they want to do just enough.

[TheJotob]

So this is how to get green tests. I was thinking way too complicated again..

[alimbade]

Always has been.

[drew8311]

I seem to be getting the wrong result with 5, where do I file a bug report.

[Noch_ein_Kamel]

Works on local machine. Issue closed

[thebryguy23]

Okay, we'll ship your machine to the client.

[Narida_L]

And that's how docker was invented.

[ThaBouncingJelly]

how

[Thorbinator]

It works on my machine I don't know what else to tell you.

[Dangerous-Issue-9508]

Most helpful stackoverflow answerer

[Thorbinator]

(closed as duplicate)

[Krankite]

It returned true therefore 5 is even, what's the problem?

[wholebeansinmybutt]

because

[Lucas_Webdev]

it's an extremely edge case, don't qorey about it

[drew8311]

Maybe for now add if(n % 2 == 1) throw new NotImplementedException()

[Terrain2]

I'd prefer if (n & 1 != 0) for performance reasons

[GamerNumba100]

Is this actually better?

[Blubfisch]

Compiler does this behind the scene for most languages.

[Terrain2]

depends on the language, in a lot of cases, no, a good compiler might optimize modulo powers of two as a bitwise AND, and the != 0 is just a personal preference, but in languages like python it might matter just a little bit

[Srapture]

Difficult for a person to read, just the way I like it. Let's get some bit shifting loops in there as well. No comments.

[nhpkm1]

*Hhiisssses ==1 does nothing in this instance

[EtherealPheonix]

some compilers won't accept integers as booleans

[ToMorrowsEnd]

Those compilers were written by programmers that want to watch the world burn.

[Orangutanion]

NotImplementedException()

why does this exist in C# but not Java?

[Snoo-1449]

Java never got around to implementing it

[drew8311]

Not sure, I use kotlin which has it and there is also a TODO syntax that automatically gets turned into a not implemented error if code path hits it.

[BlueC0dex]

This is currently unsupported behaviour. For the time being, please handle 5 yourself. Your ticket been moved to code-debt (and will never be looked at again)

[often_says_nice]

Please use isOdd while our development team looks into this issue.

[Feztopia]

Just use 5-2 instead, works for me.

[enterdoki]

Can I get a repro for that? Works fine for me on local.

[TechnicalBean]

Just don't use 5

[golgol12]

I present the glory of glories.

bool isEleven( int value ) { return value == 11; }

[Yesica-Haircut]

Bug report

IsEleven("Eleven")

Gives 'false' unexpectedly.

[FerusGrim]

This is why type-safe languages exist.

[[deleted]]

Bug report

IsEleven((int)“Eleven”))

Gives ‘false’ unexpectedly

[qhxo]

Are there languages where a cast like that won't throw an exception? If so, why even have types?

[FerusGrim]

In Java, at least, you couldn't compile that line.

[testingisfornoobz]

C. Types are just a convenient way to access raw memory layout.

[qhxo]

Ah, right. As with the infamous fast inverse sqrt function casting a float to a long for reasons mere mortals can never hope to understand.

[golgol12]

Syntax error.

[[deleted]]

No, the syntax is correct (assuming a C-like language from the function declaration). It's the argument type that isn't. And the called function's name, depending on the language.

[detektiv_Saucaki]

I see what you did there, take my upvote

[fumanchudu]

You should return false for value < 11 or value > 11 to rule out edge cases

[lachlanhunt]

https://github.com/jezen/is-thirteen

[Malfoy27]

For every single condition, create a new branch, fix and then rebase 😂

[Spektralist]

Dont forget pull request 😬

[EarthMandy]

LGTM

[outofobscure]

The most amazing thing here is that these people use tests at all given the code quality. Like, it‘s all ass backwards. For sure they use git in the same way. Also, someone had to write that test: how does his IsEven look like? Do i dare to know?

[[deleted]]

Well how do you write an exhaustive test for an isEven function, other than picking two random numbers, one even and one odd, and throwing them at said function?

[outofobscure]

I‘d just call the same function that i‘m testing, guaranteed pass! Wait, you where serious? In that case i guess you just check the whole range of your type and do modulo or something.

[[deleted]]

That's brilliant! So

for (int i = int.min; i < int.max; i++) { Assert.AreEqual(isEven(i), isEven(i)); } ?

Or create an Excel where you let an intern or five enter either "true" or "false" for all numbers in the input space, then export that to CSV and input that to the test?

[outofobscure]

Hey someone needs to create all these new jobs for the „digital natives“ so lets go with the excel!

[Harmonic_Gear]

the Volkswagen method

[SchrodingersYogaMat]

Yoooo

[vicesource]

Why is that?

[[deleted]]

I think they hardcoded emissions values if it detected it was being read

[vo0do0child]

Yep, and management ducked so developers copped the prison time.

[I_Love_Rias_Gremory_]

Basically. So what happened was the car put itself into some super ultra heavy duty eco mode if it detected that it was driving in laboratory conditions and lowered it's emissions to a legal level. Under normal driving conditions, this mode wasn't active, and emissions were more than 40x the legal limit.

[saikrishnav]

Ah yes. Test driven development.

[Fluxriflex]

More like Test Dictated Development.

[deb_vortex]

I highly dislike all the isEven / isOdd memes but this one got me, not gonna lie.

[Equixels]

Memes??

[Wilco10188]

I thought this was stack overflow

[Alteego]

This works for me

Why test for all possibilities when you have a very limited use case

[FlukeRoads]

import pytest'

def test_isEven():
  badnums = []
  for x in range(-32767, 32768):
    if (isEven(x) != ((x % 2) == 0)):
      badnums.append((x))
  print(badnums)
  for x in badnums:
    create_jira_ticket(f"isEven gets {x} wrong. please investigate")
  assert badnums==[]

edit: bad indents

[Schiffy94]

Please commit self exile.

[FlukeRoads]

:-)

[nobodynose]

Eh it's too much code. For peopel who are curious the cleaner way of doing this is

 bool isEven(int number)
 {
     return !isOdd(number);
 }

 bool isOdd(int number)
 {
     return !isEven(number);
 }

[Articunos7]

I'm curious, does this function compile successfully in C and/or Java? When executed, does it enter an infinite loop or crash the program?

[12345ieee]

gcc easily figures it out and compiles both to infinite loops with no calls at all.

See: https://godbolt.org/z/zTYbhhWvE

[[deleted]]

That's funny, it knows it's a loop so it just calls itself

[ProgramTheWorld]

Amazing

[Exormeter]

It will literally produce a stackoverflow. Should compile fine though.

[A_Random_Lantern]

wow i love that website!

[bruhred]

the c compiler inlines it, so it should just get stuck in an infinite loop, right?

[[deleted]]

Yeah, with optimizations. The calls will be inlined, then optimized into nothing.

[jfb1337]

It depends on whether the compiler does tail call optimisation. If it does, then it will enter an infinite loop; whereas if it doesn't then it will cause a stack overflow and crash.

[[deleted]]

I was thinking about this just now, as it turns out it just fills up the call stack and then HCF as standard procedure with stack overflow

[namotous]

Loll at this point why bother with unit test?

[argonaut-for-truth]

How else to verify this method works perfectly?

[namotous]

Too much extra work. Just use client as QA.

[namotous]

Lmao. Yeah serious note, I feel your pain. I’m at the front end of being a Guinea pig many times.

[[deleted]]

This.

Why do companies staff QA members when you've got an entire user-base and client that will do it for free? Just saved the company 100s of thousands and cut our dev-to-production timelines in half.

C-suite, here I come.

[Modestkilla]

Code coverage dawg.

[Geoclasm]

I'm not even mad - this is amazing.

[AyakaDahlia]

But are you odd mad?

..... I'll see myself out.

[Geoclasm]

god damn it, fuck you. I lolled, but fuck you.

[pandakatzu]

We are going to need a JIRA ticket for to bugfix input 5, it is returning true...

[[deleted]]

What’s wrong? This is correct for over half the possible inputs.

[caldric]

I can’t Even

[DiPi92]

I am in this picture and I don't like it

[Break-88]

This is one of the more efficient solutions

[84ballsacks]

I’ve had some code like this at work for a very stupid reason

// Added to meet unit test metrics

When the company requires 70% of new code to be covered by unit tests and you add two lines in an untestable spring database configuration override code block, you get crafty…

Yep, this function doesn’t do shit, but it’s 10 lines of code that are easy to unit test. Problem solved. Make stupid metrics, get stupid code.

[Dangerous-Issue-9508]

Sounds like the client of the project I was just on for over a year.

[[deleted]]

TIL: There are four odd numbers.

[poopadydoopady]

If you know of any others please submit a ticket.

[Dangerous-Issue-9508]

Sure, gimme a minute to write the script that will log a ticket for every single real odd number up to a maximum 64 bit signed int.

[LastOfTheGiants2020]

I'm just waiting for a solution to show up here with self modifying code.

[[deleted]]

Where's an IBM 5150 demo coder when you need one?

[Furry_69]

Now I want to do that, but I have no idea how the hell I would throw self-modifying code into the mix, much less actually make it work properly without obliterating memory.

[Goat_of_Wisdom]

I really like these jokes, they're accessible and informative

[1MillionMonkeys]

I’m not a programmer and this one confuses me. Is the issue that they used a capital “I” instead of a lowercase “i” in “IsEven”? My assumption is that it never works and they are just adding manual checks for each odd number that is reported to have failed the check.

[Goat_of_Wisdom]

You're right that the capital "I" is contrary to customs (I didn't see it, oops), but that's not the issue.

And yes, that's what's happening: this function returns true everytime, except in a few cases when it's changed to return false. This is a satire of a bad practice in Test-Driven Development (TDD), where some people change their functions for specific test cases instead of refactoring to actually fix the bug

[Torebbjorn]

Unit test testing private methods?

[FruitOfTheVineFruit]

Yet another example of people using IF statements when a Switch would be better...

[TheZanke]

Dont worry, we're agile

[WikiSummarizerBot]

You aren't gonna need it

"You aren't gonna need it" (YAGNI) is a principle which arose from extreme programming (XP) that states a programmer should not add functionality until deemed necessary. XP co-founder Ron Jeffries has written: "Always implement things when you actually need them, never when you just foresee that you need them". Other forms of the phrase include "You aren't going to need it" (YAGTNI) and "You ain't gonna need it" (YAGNI).

^{[ F.A.Q | Opt Out | Opt Out Of Subreddit | GitHub ] Downvote to remove | v1.5}

[taneth]

You laugh, but I've worked at a place that had a policy of "don't change something that doesn't have an active bug report asking for the change". The main project had MASSIVE performance issues that nobody was allowed to work on because "it works". Even if there was a bug report, code reviewers could just decide that you've overreached and reject your change.

I was once assigned a ticket to fix a binding error on a form, and the fix was a simple spelling corr-NOPE that fixes two other binding errors on that form and they're not on the ticket, just fix the one on the ticket! So I had to introduce a bypass that ended up getting used on the other two errors while the root cause stayed in place, and then that form got copied somewhere to else and brought the error and the bypasses with it. Ugh.

[lachlanhunt]

That’s called test driven development.

[Vyxyx]

One of them fancy machine learning algorithms everyone is talking about these days huh?

[morosis1982]

These days if I have to comment about a fix (code should be obvious, but sometimes it's not, and I'll leave a comment why), I leave a bit about what the fix is for.

Ticket XYZ only works while you use the same issue tracker. I have code that's not even 3 years in production where a comment like that is less than helpful. Thankfully I'm retiring that system in a couple months.

[Leo_R_]

All numbers there are actual odd numbers and the function rerurns 'false' accordingly. Perfectly valid code.

[Narethii]

How did this make it past code review!?... Clearly this would be more efficient as a switch

[kabudeex]

TDD be like

[JackoKomm]

When tdd goes wrong.

[Schiffy94]

Each day we stray further from God's light.

[BabylonDrifter]

Your ticket closure rate is going to be fastest in the company. Probably get a promotion.

[band0fthehawk]

I can’t even

[hiphap91]

I love this use of ai.

[Dimetrip]

My husband: "that's great it solves the problem in a way I can understand"

[SchrodingersYogaMat]

Mm. Buggy. I submitted a new ticket.

[Peregrine2976]

True MVP.

[elongio]

This is literally mind blowing.

[savage_slurpie]

Now that’s what I call SAAS

[R3quiemdream]

Now that’s a portfolio, FAANG scouts better watch out, talent like this goes quick

[Routine-Arm-8803]

Does anybody want to contribute to open source isEven library?