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What is a pointer?
A descriptive and ELI5 answer found on Reddit:
You have a house.
When you’re outside, and you want to go home, you don’t make another house right where you are, because it’s too big for you to carry around or take apart.
So you carry a piece of paper or store on your phone the address of your house. Now you always know exactly how to find your house so that you can go home.
The piece of paper or your phone is a variable.
The variable contains an address (a reference) to your house.
You can make a copy of this piece of paper and hand it out to your friends when you invite them over, instead of building each friend a copy of your house.
You can have an address book filled with pages, where each page is an address (i.e., an array of pointers). Each page you turn (each index you increment) goes to the directly next address-containing variable.
Now if you cut the address book in half along its height, and then attach the lower half behind the upper half, then you have a book with smaller pages but more pages.
You can store phone numbers in this, and even if it’s the same total size, you have double the number of pages and double the number of phone numbers (if you store one number on each page).
Now, since the pointers to home-addresses are different from pointers to phone-numbers, turning the page in an address book (increment pointer by 1) moves forward by one address.
But turning the page in the phone book (incrementing pointer by 1) leads you to the next phone number, even if you technically turned only “half a page”.
That’s how pointer arithmetic works.
Source: https://reddit.com/r/...8 -
Gear up! It's a long story.
The last job aka my current job, which I totally love(see my about-me) was a full time offer after I intern-ed for 6months at the company I'm currently working for.
It was through campus recruitment.
So, there was this particular company that I had had an eye on all through my engineering years. I had been training severely, talking to seniors who have been placed there, trying to find as much as I could about the company, clearing mock interviews online and everything. They had an online round first, I cleared it with the second highest mark. (250 of us wrote it).
Then about a month later, it was Recruitment Day (notice the reference to Judgement Day) and I was super nervous. The recruiters knew me as one of the toppers and knew I was in contact with my seniors and I immediately knew I had a chance. All my friends and staff were rooting for me. They all knew I had a thing for this company and that I had been working hard.
I had five rounds. I was the first person to clear all of them. I was incredibly happy. It was all happening too smoothly to be true. This was what I had wanted for 4 years!
They announce the results and that was where the fucking plot twist was.11 -
I work in an unrelated field, and code in my spare time as I'm just starting out. Have to pay tbe bills somehow, amirite?
So my boss has installed cameras "for security", and uses them to monitor staff on a regular basis. A couple months ago he pulled me aside with a piece of paper. My "second written warning" (next step prior to dismissal) however I haven't received any other disciplinary action.
The warning contained 10 points, all of which made reference to observances over the damn cameras.
Please keep in mind -- I have been an overachieving empleyee for over 5 years, and friends with the bosses the whole time. My boss was in my wedding party.9 -
To the people talking about boats on the other side of the cubical wall, FUCK YOU! YOU HAVE BEEN TALKING FOR 45 MINUTES! DO YOU WORK? I HOPE YOUR BOATS ALL GET RUST. I worked 12 hours on Sunday, got 4 hours of sleep, pulling a full day, then depending on how much work I get done work all night again. RESPECT MY QUIET ZONE!!! Uncouth peasants!13
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To all the data engineers in here: WTF is going on in your field?
I've worked closely with a dozen data engineers in the last 5 years (and talked to friends and internet strangers about this and get similiar responses), mine if them seem to know how to use a computer!
They don't understand git, ORMs, best practices, how to use a terminal, DAGs (important for using modern ETL scheduling tools like airflow and prefext), etc
Guys with 10 years of experience on their resume and they can't wrap a model into a flask app with 1 endpoint. They'll reference local files on their machine in w jupyter notebook and are shocked it won't work on other computers!17 -
So I had this classmate of mine and we agreed to be partners in a project.
She told me she'll take care of the project and let me just do my other stuffs.
We had the highest grade for the project presentation and she boasted how she made that project of ours to the class.
Some students from other class wants to have a copy of our project as their reference (since our class is the first to present) but my partner declined to give them some. She said it was her who made the project from the scratch.
I had my friends from other class and I decided to help them. We had our overnight the next day searching for at least the concept of our project and guess what?
I stumbled upon a certain site and found the source code of our project. Her code and the code from the site are almost the same!
Think she just changed the variable name HAHAHAHA2 -
Someone around here once said that they believe that Rust compiler errors are generated by first sending the compiler noise to some dude in India and then they parse the errors and send them back to the compiler.
This was not a nod against our friends from the land of India, but instead, I think, a praise.
Thus I would like to add a request to the rust devs to see if they could include more "trademark Indian" sassy remarks in the messages that the compiler generates. But I am afraid that they think I am being racist or something.
For reference: My Indian friends are all beyond sassy in the way they clap back at mfkers when having friendly arguments, I have been left with a "well, damn" in multiple occasions because I am incapable of reaching that level of sass myself.12 -
!tech
recently i have been realising that i am utterly lonely. their isn't a group of people in life (apart from my parents) who aren't either paid to be with me (i.e office colleagues) or i am paying to be with them (i.e gym) and its very sad.
i don't have any siblings. the relatives are on sour terms, so no one visit. my parents are mostly loveless and the whole family is just focusing on sustaining than living or enjoying. i recently had some arguments with my friends and now they too are not on talking terms. .
I am a 25 year old, short , somewhat chubby guy in the most boring and safe field with no interesting interests except an average guy stuff ( cars, stocks, tech, career, sports... things that guys usually discuss).
I have been told on face that my vibe isn't interesting and i can honestly accept that . i myself wouldn't want to be with someone like me. if you are girl, then i will probably be talking to you for 30 seconds of joke-cum-fun-cum-serious-cum-caring stuff( i usually have 1-2 lines of witty stuff prepared) before going all silent and boring you the fuck out.
the next convo will be followed by an even dumber sentence but i will try to end it with a geeky joke or reference and a small laugh prompting you to also smile or fake laugh. and if you did that, then i will be desperate to keep you laughing, but my sentences will keep on getting more dumber and boring until you leave and categorise me as the most boring idiot/ "nice guy" you met. ( and meanwhile i am at the mental stage where i love you as the most precious thing of my world and imagining kids and life with you)
I can't care for anyone. I have seen too much parent fights, empty walls, money issues to understand how to care for anyone . my life is focused and sad.
shall i go on giving chocolates to everyyone in office to be popular? shall i ask a random gorl on the stret for her phone number? shall i start strolling in the park and try to talk to people? honestly, if i were a girl and someone does this to me, i would be shit scared and creeped out than falling for that guy.
then how the fuck i land myself into someone who wants to be with me? do i even want someone to be with me? or is loneliness the only thing i want?
i feel pretty okay for the most part of the day in this loneliness, except at some weird times like when am eating a platefu9 of chinese alone in some shop, or at night when i lock the door of a 9x9 large room and realise that i am the only one here.
i was once excited to grow up and do grown-up stuff like drive a car, take a solo tour, goto vaccination in every few days, be adventurous . but that has changed . i did all these things when i had people in my life. i somewhat felt motivated to do those, seeing that there were people who wanted to be with me during/after these things and care about me. now it just feels pointless.9 -
A big part of my frustration as a programmer is that I don't have a lot of friends that are on a similar level that are willing to let me bounce ideas off of them. The last few years I've been flying blind with no external frame of reference except for the few really beginner dev friends that I have.
Where do you people socialize? IRC has long been... well, kinda dead compared to how it was 15 years ago or before. I have ideas that I'd love to discuss with others in the same sphere of interests but simply cannot find them.
Frustrating.5 -
Tldr:
Can't fucking figure out why I'm the only one who can't solve a DP problem in code, when me and friends use the same idea and no one knows why only mine doesn't work...
We are given a task to solve a problem using DP. My friends write their code with the same idea as a solution. Copying the code is not allowed. I follow the same idea but my code won't work. Others look into it, in case they find errors. They can't find any.
The problem (for reference):
Given a fixed list of int's a = (a_1,a_2,...,a_n) and b = (b_1,b_2,...,b_n), a_i and b_i >= 0, a.length == b.length
We want to maximize the sum of a_i's chosen. Every a_i is connected with the b_i at the same index. b_i tells us how many indexes of a we have to skip if choosing the corresponding a_i, so list index of b_i + b_i's value + 1 would be the position of the next a_i available.
The idea:
Create a new list c with same length as a (or b).
Begin at the end of c and save a_n at the same position in c. Iterate backwards through c and at each position add the max value of all previously saved values of c (with regards to the b_i-restriction) with the current a_i, else a_i + 0 if the b_i-resctriction goes beyond the list.
Return the max value of c.
How does that not work for me but for the others?? Funny enough, a few given samples work with my code. I'm questioning my coding ability...7 -
Hello guys, i need some advice:
Our school is having a "auto-management" (idk how to translate) period, it lasts 3 or 4 days just before christmas vacation, and in those days students get to organize courses about pretty much everything to teach stuff to other students (exept stuff like video games cuz the principal is closed-minded), some friends asked me to make a course about programming in c# because they are interested, i thought it was cool so i said OK.
Now i'm thinking how to structure it, it's going to be 2 "lessons" of 2 hours each, and it's open to everyone in the school.
I don't want to do a full blown course explaining everything, i just want to give them a kick start and point them to the right direction, I thought about explaining some "theory" in the first lesson, I'm assuming almost everyone that will come never did programming stuff, so i'm thinking of explaining stuff like how a computer works, why you need a compiler, etc.. maybe based on the introduction from learncpp.com without getting to much into the details and then explaining how c# works and its grammar.
Then in the second lesson i'll try to code togheter some stuff (We'll have just one pc attached to a projector).
So, how would you do this ? I mean i never tried explaining programming to someone else and i'm self-taught i looked at the guide on msdn but it starts directly by giving you an hello world, should i follow it ? I fear i'd get too thecnical and they wouldn't understand me, do you know some good guide i can use as a reference ?
ps: there's going to be max 30 people1 -
!rant !dev
So, following up my last rant.
https://devrant.com/rants/2433162
I quit on Friday, this is what I said to my bosses.
"In the last week I had, 2 panic attacks, and I have 2 theories for this, one is that I have underlying psychological problems, the other theory is that we are under an impossible task, I choose to say now that I have to quit because I have psychological issues, but if you are willing to hear my other theory, that involves saying that meeting the deadline is not viable, then I can tell you that, so do want to listen that part?.
Bosses: No, we heard enough, we are going to have your contract terminated in order, and we will let you know when you can come and pick your paycheck."
So, that's them. Now about me and how I re-discovered GTD, or more precisely how I organized my whole weekend using taskwarrior with GTD, and why I think is going to be useful as a freelancer.
Before I feel good about telling you about my weekend I have to tell you a few things about myself.
I am a very impulsive person, I have a lot of energy in short surges, so I have to be able to maximize my activity when I'm in a surge, and I have to maximize my rest when I am not.
That's hard to do, it requires a balanced lifestyle, I am also very prone to being neurotic, and overwhelmed by the amount of stuff that I want to do.
And on top of that, when I am resting, I have surges of things that I want to have, do, or implement, it could be software related, as "Doing an app that will be the Uber of home services", to house improvements like, "I have to fix that leaking roof", and all the sort of stuff that happens in between hardware and software. That surge of consciousness doesn't allow me to have the proper rest that I need before I engage with activities again.
Because of this I have a very cyclic rhythm, with whole weeks burning my energy into doing stuff, and weeks resting doing very little and thinking too much.
Now about my weekend. Friday night I was browsing the web, and a thought came to my head. "The way you use your terminal, says a lot about your personality", and I got curious, so I searched for, "Show me your terminal", and found a post in dev.to to see all kind of nice terminal setups, from the very minimalist to very feature rich oh-my-zsh themes with plugins for git, aws and what not. One of these pictures really got my attention, a guy had set up his terminal to show him, how many task has he done in the day, and how many cups of coffee has he had.
So by investigating how he set up his terminal to show in the prompt the number of successfully completed tasks in the day, I found out that he was using taskwarrior, he was also kind enough to share the source code of his prompt setup, which I bookmarked to later incorporate that into my oh-my-zsh config.
After reading about taskwarrior, I also got a reference to GTD, I don't remember if this was one of those thoughts that I have and follow immediately, or if I read something that led me to a YouTube video summarizing GTD.
In the end, after watching that GTD video, I decided to give it a try to organize my life, and help me find a remote job, keep my house in order, plan my social activities as "hang out with friends", "visit mom and dad", and give the proper amount of attention to my GF, with whom I am deeply in love, and willing to spend the remaining of my years with her.
So my fist task was.
task add Ask for GF's parents blessing.
Which of course I have no intention of doing right now, but is one of the things that I will eventually have to do.
Then it started, I started adding tasks, and things to do, and go through the whole Capture phase of GTD.
Now it is a good time to write a small summary of what I think GTD is.
GTD is a life habit of organizing your life in todo-lists. And it was a very specific core method, that in the video summary that I watched was called CPR.
Capture, Process and Review.
Capture:
When you capture you just add your tasks to a bucket list.
So I took a notebook and started writing down everything that I wanted to have done. I also started to capture ideas as they came up to me, I did this by writing a telegram saved message in my phone, or directly adding it as a task in TW.
Process:
I read my telegram messages and put them into my task warrior list, then I started to organize my tasks into projects, breaking down every task that was not an atomic unit.
* And different projects started to emerge from this. One of them was project:Housekeeping.
And here's my screenshot of what I did this weekend, also the number of projects that I have, and all the things that I have to do in order to have what I think would be a very balanced, fun, and productive life.
You'll be able to see in the screenshot, that there's a blocked task, yes, tw allows you to organize dependencies too, so one task is delegated, and blocked by the delegation task.
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