https://stackoverflow.com/questions...

*giggles in c*

We finally win (source: https://stackoverflow.com/insights/...)

StackOverflow is a funny place (http://stackoverflow.com/a/2276604/...)

For my fellow javascript devs:

var floored = 12.68 | 0;

Is much faster than:

var floored = Math.floor(12.68);

And in both cases floored === 12
#JustJavascriptThings ¯\_(ツ)_/¯

Source: http://stackoverflow.com/questions/...
Performance test: https://measurethat.net/Benchmarks/...

https://stackoverflow.com/questions...

The second answer..

I have to rant a bit about the toxic reactions to a constructive Q&A website.

People keep complaining that they get downvotes and corrections, or stuff like that.

Are you fucking kidding me?

So you expect people to spend their own time for absolutely free, to help you, while you don't even want to invest in describing the issue you're having properly? And then complain that people are having issues in understanding your questions?

Let's look at this scientifically. Let's gather up some questions that have been received badly on SO in the last few hours. From the top (simply put https://stackoverflow.com/questions... in front of the id):

47619033 - person wants a discussion about an algorithm while not providing any information about what worked and what failed. "Please write a program for me". Breaking at least 2 rules.

47619027 - "check out my videos" spam

47619030 - "Here's the manual that has my answer but I can't find my answer in it".

47619004 - "how do I keep variables in memory"

47618997 - debug this exception, I'll give you no info on what I tried and failed. Screw this, you guys figure this out, I'm going out for beer.

47618993 - expects everyone to guess what the input is, what the expected output is, and whether he has read what HashMap is in the manual. But sure, this question is so far the best out of all the bad ones.

47618985 - please write code according to my specifications

Should I go on? There wasn't a single clear question about problems in code in this entire small set. Be free to continue searching, let me know if you find something that:
1. You understand what's being asked
2. Answer is clear and non-ambiguous (ex. NOT "which language is the coolest?")
3. Not asking someone to write a program for them.
4. Answer is not found in the most basic form of manuals (ex. php.net)
5. Is about programming.

The point is:
If you get downvoted on Stackoverflow - then you wrote a shitty question. Instead of coming over here and venting uselessly, simply address the concerns and at least TRY to write a clear question if you expect any answers.

A list of hilarious comment in code:
http://stackoverflow.com/questions/...

One that I liked in particular:

Best way to handle any exception...

try{
something
} catch(e) {
window.location.href =
"http://stackoverflow.com/search/...]+"
+ e.message;
}

try {
// something...
}
catch (Exception ex)
{
string uriToLaunch = "http://stackoverflow.com/search?q=" + ex.Message;
var uri = new Uri(uriToLaunch );
var success = await Windows.System.Launcher.LaunchUriAsync(uri );
}

"SO culture is so mean, they downvote good questions for no reason!"

Meanwhile, most of the downvoted questions in my list:

https://stackoverflow.com/questions...

https://stackoverflow.com/questions...

https://stackoverflow.com/questions...

https://stackoverflow.com/questions...

https://stackoverflow.com/questions...

https://stackoverflow.com/questions...

https://stackoverflow.com/questions...

https://stackoverflow.com/questions...

Translation:

- OP1: "Do my homework for me"

- OP2: "I am too lazy to google this"

- OP3: "Gimme code, here is a shitload of requirements"

- SO: "No."

- OP1/2/3/DevRant: "Oh mah gawd mah question was so gud, SO such toxic, very mean, much wow qq."

Kk.

In case you need to kill some time and would like to see some funny stuff, here you go: https://stackoverflow.com/questions...

thank me later

Everyone shitting on SO answers being mean (which sometimes they are), meanwhile:

https://stackoverflow.com/questions...

Garbage like this is how you become a misanthrope.

I know this really isn't the place for this, but I REALLY need help..

I need to add app scaling inside my game.

To do this, I need to listen for a MouseDragEvent (or similar) on a JavaFX object like a Label or Image.

Here is my SO post:
http://stackoverflow.com/questions/...
Thanks in advance!

So I found these stack overflow questions and thought they were particularly humorous.

https://stackoverflow.com/questions...
https://stackoverflow.com/questions...

The answers were pretty good. But I wanted to actually "break out of an if statement" like the ops asked for. So I created these monstrosities:

//Something great
try
{
//Some code.
}
catch(Exception ex)
{
string url = "http://stackoverflow.com/search?q=";
System.Diagnostics.Process.Start($"{url}{ex.Message}");
}

Android development sucks assssssssssss.
They FINALLY made a design system that doesn't look ugly so I thought might as well upgrade my old apps to it.

Publish and tonnnnes of crashes hours after launch.

Test on older devices and turns out some @color/material_xyz was missing in a lower API code BUT available in higher ones? No fallback, no error in AndroidStudio, just a runtime crash. Amazing

Then the location permissions glitch up. On lower androids even if you aren't actively tracking the user, the system tries to call some method which if you haven't overridden, the app crashes at launch.
And no amount of wrapping in try-catch-ignore helps (https://stackoverflow.com/questions... helped)

OH AND THEN the above solution if used on latest Android code33, CRASHES ON RUNTIME. so more sets of 'if VCODE this then ask this else that' bullshit.

I don't even need location it's just for better ad money ffs.

I've been team-android since Froyo and hate apple's monopoly, but if this is the level of their competence, many will jump ship sooner or later.

PS: yes I know I should've checked for lower versions before hand but Im not gonna make 8 android VMs to test all when different things fail in different versions.
I did have to do that in the end, but for a meh pet project one shouldn't have to. The system should have enough fallbacks and graceful fails.

OMG... this client is killing me...

So they are writing a Java / SpringBoot app for whatever. For some reason they decided to write it in the overcomplicated way, i.e. using a custom Spring's BeanPostProcessor that changes the eventual type of some beans, causing some weird ass issues, causing the app to fail to boot up if built on some systems and start up just fine if built on others (https://stackoverflow.com/questions...).

I've advised the client (devs) to simplify the architecture and avoid using type-mutating BPPs (bcz.. you know.. noone does that..).

Instead, the client created a task for me to "remove the build logic creating JAR packages" and another "Create a shell script manually assembling the CLASSPATH list and launching the application"

omg... what the hell is going on? Am I on camera? This can't be real... in 202-fucking-4 in a greenfield project!!!

wtf...

https://stackoverflow.com/questions...
Enjoy!

Goodbye world, I will not miss you, I will not regret leaving you BUT THIS! I MEAN THIS !!! I cannot stand -_-
https://stackoverflow.com/a/...

For fuck sake! Why don't you put comma at the end of the line!! please someone delete his answer no commas at the beginning. Please, show mercy for a second T_T

So apparently south korean maps are top secret and do not allow for styling in google maps:

"Yes , Korea does not support some features offered by Google Map due to national law. Google Map Korea can not be export map data for data centers abroad or including the ability to dynamically change the map image. Many South Korea Maps and services are limited to the domestic uses and Google is striving to make this a better service."

sources:
https://snazzymaps.com/help

https://stackoverflow.com/questions...

https://productforums.google.com/fo...

I just scroll past this question asking how to get good at Git commands (https://devrant.com/rants/9997784/...). Figured I'd share my thoughts as a separate rant cause it's a topic I've tinkered with a bit.

So, My initial engagement with git-related queries on StackOverflow dates back to around 2021.. Surprisingly, one of my short and straight-to-the-point replies got a hand full of attention. You can check it here: https://stackoverflow.com/a/...

Now, about mastering Git commands – from my own trial and error:

1). Instead of trying to cram everything into your big brain, scribble down notes. Trust me, it’s more practical. I kept a cheat sheet of sorts as notes on my PC, noting down the commands I used day in, day out. Super handy beyond just work stuff.

2). You gotta get what each command does, but you don't need to nail it all at once. Spend a day diving into the basic commands. Leave the trickier ones for later; they start making sense as you get more into it.

3). I had this aha moment when dealing with a merge mess using a GUI tool. Switched to the command line, and bam! It made way more sense. The command line's like a secret passage to really understanding Git.

So, if you're wondering how to tackle Git commands, my take is: *notes, *baby steps, and *lean into that command line magic. Mix them up your way and see what sticks for you!

Hi guys, anyone knows about Google App Engine custom runtimes and CloudSQL?

Please answer my question on StackOverflow.

http://stackoverflow.com/questions/...

Looks like no one there cares about helping me...

"C# is better than JavaScript"

I only see ruminations of people who are so far gone mentally they can't even see the forest from the trees anymore:

https://stackoverflow.com/questions...

Imagine having 100s of garbage ways to choose from for something that should have trivial built-in functionality.

🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡

oh and don't give me the shit "enums are bad pattern" grow up and learn to code

I will never make a backend in C# ever again.

Just look at this bullshit:

official docks, PAGES long: https://learn.microsoft.com/en-us/...

confused devs running rampant: https://stackoverflow.com/questions...

absolute total GARBAGE

literally ANY other language or framework, you set an env file and you fuck off. of course microsoft has to make the most convoluted pile of shit horse shit fuck shit that confuses everyone. i shouldn't have to pray to the dev gods every time i spin off a staging or production build that my environment variables are set correctly

GOD

So today I found out why I couldn't SCP stuff to one of my servers for the last 6 months.

It was a fricking "echo" in the .bashrc script (well, in a script that got sourced in there).

(Read: https://stackoverflow.com/q/...)

Such a savage! :D

Ref.:https://stackoverflow.com/questions...

PS: I am new to PycURL and love the speed improvement so far!
Got 1.9s to load the header and body info of https://www.google.com with the requests module.
BUT with PycURL I can do the same shit within 0.4s (including printing all the info on screen which also takes a little bit of time)! Holy fucking shit, mate! That's such a great tool!

https://stackoverflow.com/questions...
I'm quite tempted to tell him to implement everything static in Python and get this one maybe non-static string using RegEx, but I don't want to lose any more reputation. D:

"blazor is far better than any other frontend framework"

ok:

https://stackoverflow.com/questions...

ah yes, very nice and easy to grok syntax

clowns

🤡

Hey guys, could I ask you to upvote my question on stackoverflow or take a look and help me solve this if you can, I'm stuck with this problem for one week : https://stackoverflow.com/questions...

I would really appreciate it

Me: "tokens are not mined in general, instead there are gas fees"
Them: "you will charge us for gas fees?"
Me: "no that's not us, that's the decentralized network doing that"
Them: "but we are using hyperledger to generate tokens."
Me: "yea in theory there are no gas fees, but you now have to manage the decentralized network"
Them: "i see, so since there is only probably 2 or 4 in the network, do we still charge ourselves? how do we define gas fees?"

(You don't see...)

Me: "i don't think there are gas fees"
Them: "got it, who set the gas fees"

(Um you don't got it...)

Me: "https://stackoverflow.com/questions..."

Linux is great
Linux can be customized

Welp, not so much. Simple things are not possible to do.

After 1H research I can't have timestamp near each line over SSH.

I'm not talking "history", i'm talking live.

basiclly I want to see timestamp on every single output line.

Basiclly this :

https://unix.stackexchange.com/ques...

But running automaticly for each command ever.

To be fair, same problem exists in PowerShell on windows
https://stackoverflow.com/questions...

And no, I don;'t want to switch to some random halfbaked teminal.

One of my favourite rant is this one:
https://devrant.com/rants/667491/...

Today I found out some other assholes doing the exact same thing.

But this time their company name was not int the profile but the answer time was unbelievably fast. So did a google search and from LinkedIn, in that they work in the same company. Flagged the question waiting it be removed.

Question Link: https://stackoverflow.com/questions...

My laptop is having some power issues and it often turns off randomly.

Last time, it happened while running some git stuff and since git didn't finish properly, the whole git directory fucked up: I could not do anything with git anymore.

Later I find this dude: https://stackoverflow.com/a/...

If you're in here, Nathan VanHoudnos, just know that you save more lives than any politician

Hello, Hi! Friendly neighbourhood noob here!

What’s he stuck on today you ask? React and Firebase!

Did he try? Yes he did! Only a little hitch this time.

Really? Little?
...It’s all relative... like the truth!

Anyway PLEASE someone look at my StackOverflow question!!

https://stackoverflow.com/questions...

Firebase and react are awesome tbh. But I cant figure this out!

Thank you!!

I answered this question on Stackoverflow (Javascript) and I tried very hard not to lose my cool in the comments below: https://stackoverflow.com/questions..... How can you not see this?

FUUUCK TYPESCRIPT

It can't handle this function: `(arg) => arg` without kicking around a bunch of generics.

https://stackoverflow.com/questions...

This is ridiculous. The generics system on Typescript is complete trash, the amount of things it's unable to handle are unbelievable, and I feel like I'm taking crazy pills when I'm supposed to just accept that they couldn't possibly have done better.

Seriously, if I was one of the developers and I saw an issue like this, I wouldn't defend it; I'd be embarrassed.

// new Rant("help needed!")

I really need some help guys! Would be nice if you could checkout

http://stackoverflow.com/questions/...

and help me out if possible :) Got some problems with ffmpeg on OS X not streaming https urls.
And if these kind of rants aren't supposed to be posted/created please tell me so. I am still not familiar with the overall flare of this community ;)

You know you are done when stackoverflow gives upon you: http://stackoverflow.com/questions/...

So I decided to run a scheduled job on the server just before everyone starts using the it.

Quirk of C++ (also C I think)
int array[]={1,2,3,4,5};
int temp = array[0]; //valid access
int temp2 = 0[array]; // also valid

C++ is a member of the Foot Shooters Club languages of choice.

Also, this weekend I learned you cannot have a vector of references:
https://stackoverflow.com/questions...
Well, at least not without some pain.

Curious if anyone can help me with this question
https://stackoverflow.com/questions...
?

Finally discovered kind of explaining something that baffled me

https://stackoverflow.com/questions...

It really pisses me off as I've taken block scope for granted as a default thing.

I've got an open question to people in the community who know more than me, do most modern languages , scripting or not have block scope?

On https://reactjs.org/docs/... it is declared that useEffect runs after render is done.

However... if you put into useEffect an expensive calculation or operation e.g. "add +1 to x billion times", it will get stuck after updating the data, but before the re-render is done.

This leads to inconsistency between the DOM and the state which I believe is a foundational point of react. Moreover, the statement that "useEffect runs after render" is false.

See also: https://stackoverflow.com/questions...

The solution is to add a timeout to that expensive operation, e.g. 50 ms so the re-render can finish itself.

The integrity of my belief in react has received a shrapnel today. Argh :D Guys, how this can be? It seems that useEffect is not being run after re-render.

Why do people try to answer questions they don't even know what mean...
I want to use a package that's made for nodejs and it's using one of the core module of nodejs (http), so that's a problem because react-native doesn't have that module and I can't just simply install it (it won't work), so I search the web in the quest for a solution maybe a drop-in replacement or a polifill or something, I got to this question that's exactly what I would ask if I were to do the question myself https://stackoverflow.com/questions... asking for a polyfill to use http module in react-native, and the only answer is from a guy that I don't think he even knows what he is talking about, his answer don't make any sense with relation to the question and doesn't even address package http nor polyfill so obviously he didn't even know what the title of the question means...

If you don't fucking know something, just stay fucking silent don't reply with giberish stuff that don't have nothing to do with what people are asking. You don't have know it all, don't feel you have to... and don't try to answer stuff you don't even know.

Hello, a question about Node project -
How to import node libraries only once and use them all over the project.

I have asked it on StackOverflow, link to it

https://stackoverflow.com/questions...

If you guys have any idea for it, please, share!

Friday so not much happened except after switching mysql connector it turned out mysql-connector-python can’t handle blobs properly.

Funny that answer on SO is not to use it.

https://stackoverflow.com/questions...

It’s not obvious cause all you get is error when selecting from table that have blob.

Also I bought two books full of slavic bestiary drawings and descriptions of monsters.
Those drawings are pretty cool. I plan to try to make low polygon model from one of the drawings using blender 2.8

Hey fellow ranters. Please help me with some trouble in my code :(

http://stackoverflow.com/questions/...

I think i'm losing hope in me and in my future as a developer... This is actually a pretty easy thing but nothing it is not working... Please help me!!

!rant

What is your opinion on StackOverflow Teams (https://stackoverflow.com/teams)?

I have mixed feelings! A mix of "oh god why!?" and "that might be a great tool!"

Today I found a faulty design choice in java, that seriously makes me hate java. Basically java prohibits abstract static methods. This -combined with the poor design choices for constructors - means that Subclasses cannot have a common constructor or static method calling the constructor.

Basically meaning that you can't just map a collection to objects without handling EVERY FUCKING CASE, WRITING THE WHOLE MAPPING AGAIN AND AGAIN, ADDING A FORCED PORTION OF SPAGHETTI WITH EVERY CLASS WHERE THIS WAS NEEDED.
https://stackoverflow.com/questions...

There seem to be other OOP languages with this faulty design. Can't say if I now hate OOP ingeneral or not, because maybe some languages may have provided a substitute for this

http://stackoverflow.com/questions/...

...and then you go whine that StackOverflow is full of arogant people that only downvote and flag. Yes they do... if you act like an ass or don't even go through the Tour.

I don't know why I can't understand how to use thymeleaf. It's concept makes sense, split an html page into two so you have a header html page made up of code you don't want to change, and an index html page of content you do want to edit. But no matter what it won't fucking connect the classes.

https://stackoverflow.com/questions...

If anyone has experience with this you can take a look at my post here on it, maybe give some input. For now though I'm going to just run a single html file and make comments in my index page. :/

I'm expecting my StackOverflow questiion to get shut down and some mod to want to piss on my corpse ( https://stackoverflow.com/questions... ) so I'll ask this here too. Anyone set up the open source Jenkin in a DR environment? I'd like an Active/active hosting solution but everything I read points to Cloudbee's... Post your answer on SO if you want, I'll vote up whatever looks good, but in case it does get shut down by the assholes with a god complex, please @ me :)

I swear to god dio and dart's http client is so fucking stupid. I can barely do something in 90 lines to get a web resource when I can do it in 10 with python's requests library. The support for storing cookies is nonexistent, and even with CookieJar/Dio I still need some stupid long hack like this:
https://stackoverflow.com/a/...

The worst thing is that this has happened twice now, the first time I resolved after a long fucking time trying to solve it, and now I have the same exact problem again, but I can't just simply copy my solution from last time to use in the latest problem.

Even curl is more useful than whatever the hell the http client for dart is

My journey along Java continues and so I have discovered something I didn't know before:

If a subclass tries to call a method on its parent which it has not overridden, then it will call the method as if you hadn't used the keyword 'super' (and I think it will try to find it in the classpath and SDK).

Example 1:

public class SuperParent {
public String test(){
return "SuperParent";
}
}

public class Parent extends SuperParent {
}

public class Child extends Parent {
public String testChild(){
return super.test(); // same effect as test();
}
}

public class TestInheritance {
public static void main(String[] args) {
System.out.println(new Child().test()); // returns "SuperParent"
}
}

Example 2: with getClass():

public class Parent {
@Override
public String toString(){
return super.getClass().getSimpleName();
}
}

public class Child extends Parent {
}

public class TestInheritance {
public static void main(String[] args) {
System.out.println(new Child()); // prints "Child"
}
}

This here is of course a special case: .getClass() will always return the class name of its caller, so naturally in this case it returns Child and not Parent.

You would expect it to return "Parent" since you use 'super' in the overridden toString() but it returns the Class name of the Child (then there's something in programming languages such lexical scope and execution scope, which I'm not sure if it applies here).

The solution for this example is of course .getSuperClass().

Inheritance isn't always straight-forward.

References:
https://stackoverflow.com/questions...

https://stackoverflow.com/questions...

In regards to my last string of posts regarding react and Auth, I got it working the bearer token is being passed but now just getting XML errors every time I submit a form. All the data being passed is JSON. I've created a stackoverflow question https://stackoverflow.com/questions... as I'm getting nowhere and SO really isn't helping either. So if anyone wants to take a stab, go for it.

Why useImperativeHandle in React is bad?

I have component A. I have component B which is a child of A.
I have button in component A that should change how component B is displayed.

Usual approach is to set state in A, change it upon click and pass that state as flag via props to B.

But there is another approach via exposing ref to component B using forwardRef() + useImperativeHandle().
And then calling method that belongs to B from A. Like this: bRef.current.changeDisplay()

https://stackoverflow.com/questions...
https://reactjs.org/docs/...
https://github.com/reactjs/...

People on SoF and Docs say that the first way is preferrable. But no one explain why.
Does anyone know why calling child method from parent is considered bad?

I do not fully understand this.setState in reactjs with async functions, so I posted a question on SO,
https://stackoverflow.com/questions...

I have accepted the given answer as it makes sense. but in reality the solution does not work, can anyone shed some light on it?

Hey, I have a question concerning the use of jpa annotations in a kotlin multiplatform project and how to organize shared data classes.

I already posted the question on stackoverflow: https://stackoverflow.com/questions...

I would appreciate every help :)

https://stackoverflow.com/a/...

ill let you guys see this one for yourselves

Today, I went on the history of devRant that earlier how people used to post undefined rants. Even some who have knowledge can do it now!

I searched a lot about devRant on different media and got some bits

Here @AlgoRhytm asked a question on stackoverflow

https://stackoverflow.com/questions...

I kept reading there chatlogs

Many people joined and left this community (Sounds too bad). We lost many legends like @Linuxxx, @Skayo and more and more.

But still there are many good one remaining from ages like @Root, @Jilano, @theabbie and more and more
I don't know what I am conveying to you people but I will try my best to stay tuned with devRant because I love it.

I need just a bit of advice.

I am working with node.js and React and mongoDb

I just want that please take a look at my schema architecture (Specially for address) for profile and suggest me which is better

Approach 1 :
https://paste.centos.org/view/...
The things that scared me with this approach. I tried this also But it become unnecessary headaches to insert address and then query address as it is nested schema .
Also if you check this out
https://stackoverflow.com/questions...
[Answer by Konstantin Smolyanin (Long Version))]
One must not considered nested state in react.

Approach 2
https://paste.centos.org/view/...
I can store address into another collection

Also is there any reference sites where I can learn about schema architecture or database design with practical scenarios.

Thanks for reading out.

¡¡Good news!! Finally solved the image upload problem with lumen and angular. It happens that, even the $request in Lumen was "empty" it turned out that the actual image file was a binary object inside the Lumen $request variable that didn't render because the browser, postman and everything I tried couldn't understand it (maybe something to do with the Content-Type). I figured out and solved it, now I can easily save, delete and even modify images when are in the server side.

One more thing... My code was fine the whole time, l mean like, 3 days of finding a big that doesn't exists haha

Everyday we learn some new si*t

For those who don't know what I'm talking about, the story is right here:
http://stackoverflow.com/questions/...

PS: thanks guys, I really appreciate your comments: @champion01 @itsdaniel0 @dfox @joetj

I got situation here,

I am getting 524 error from cloud fare. I sent some data using AJAX, process it and then return the result. Since the data is large and have some SQL manipulation on it so it take a lot of time. I put the process in back end. But still even for 10k records it took 4-5 minutes to process, Issue is everything works fine but since cloud fare response time is 1-2 minute so it through 524 error (as it does not getting any response within its time frame). How I am suppose to tackle this. May be using job scheduler now ? My client simply refuse to send small data. My Friend is suggesting don't use ajax, simply reload the page. But again data is too much so page loading will also through 524 error. Kindaa stuck here. Any idea/suggestion how I can proceed.
Language I am using PHP. Database, MySQL and SQL.
Hmm Here is some more explanation
https://github.com/marcialpaulg/...
But not working
Here is also something
https://stackoverflow.com/questions...
But I am thinking why redirecting ? It doesn't make sense to me

Is ECMAScript a dialect of Lisp?

"JavaScript has much in common with Scheme. It is a dynamic language. It has a flexible datatype (arrays) that can easily simulate s-expressions. And most importantly, functions are lambdas. Because of this deep similarity, all the functions in [recursive programming primer] 'The Little Schemer' can be written in JavaScript."
— Douglas Crockford

An interesting discussion on SO (https://stackoverflow.com/questions...)

Can anyone help me solve this https://stackoverflow.com/q/...
I am stuck on this thing and did not receive any answers yet

Hey, anyone ever worked on Avro or Serialization?
Please have a look.

https://stackoverflow.com/questions...

I don't know why whenever I ask a decent question on StackOverflow it gets ignored. :/
And a stupid ones gets downvoted lol

How deep do you go when trying to find a solution?
I have a need for combinations of items. I have used built in functions in Python for this. When I first used those I wanted to learn how they worked internally. I read through the source and thought that was cool. I don't think I really understood that code very well.
Now I need the same solution in C++. There is not a prebuilt combinations function in C++. There is a prebuilt verion of next_permutation. I can build upon that to make my combinations code. However, I am in the middle of trying to make something work. So I found this nice SO question:
https://stackoverflow.com/questions...
The code I ended up using:
template<class RandIt, class Compare>
bool next_k_permutation(RandIt first, RandIt mid, RandIt last, Compare comp){
std::sort(mid, last, std::bind(comp, std::placeholders::_2, std::placeholders::_1));
return std::next_permutation(first, last, comp);
}

template<class BiDiIt, class Compare>
bool next_combination(BiDiIt first, BiDiIt mid, BiDiIt last, Compare comp)
{
bool result;
do{
result = next_k_permutation(first, mid, last, comp);
}while(std::adjacent_find(first, mid, std::bind(comp, std::placeholders::_2, std::placeholders::_1)) != mid);
return result;
}

I am mostly able to figure out what is going on with the templates. I still am not understanding the basic algo behind permutations.

Our data set is tiny. 4 items max. So efficiency isn't really a big issue here.

How long do you spend learning how it works versus just finding a solution for the task at hand?

In general I need to spend more time learning different kinds of algorithms. So I should probably add permutations to that list of ones to study.

I need help with this issue on StackOverflow: https://stackoverflow.com/questions...

Thanks

Laravel docker ports configuration sucks. There is no fucking documentation in fucking laravel docs how how to fucking configure ports. I have set wrong port, wrong host with my docker setup and it was just giving fucking stupid error where lot of stackoverflow solutions do not help. FInnaly I found the solution here https://stackoverflow.com/questions...
which finally helped. So the host needed to set to the mysql instead of fucking localhost - I had found this in another SO answer but it was not enough. How the fuck can I know. Why it is not written in documentation. https://laravel.com/docs/8.x/...

And then port - it was needed 3306 - how the fuck could I know that I need it instead of 3000 which I have set in docker setup? Wtf.

Finnally when I made query "laravel docker what mysql port to use"

then I found this stackoverflow answer. Why need to make things so hard?