I've had my share of incompetent coworkers. In order of appearance:

1. A full stack dev. This one guy never, and I mean NEVER uses relationships in their tables. No indexing, no keys, nada. Couple of months later he was baffled why his page took ten seconds to load.

2. The same dev as (1). Requirement was to create some sort of "theme" feature for a web app. Hacked it by putting !important all over the place.

3. The same dev again. He creates several functions that if the data exists returns a view, and if it doesn't, "echo '0'". No, not return 0 or return false or anything, but fucking echo. This was PHP. If posted a rant about this a few months ago.

4. Same dev, has no idea what clean code is. No, not just reusable functions, he doesn't even get indenting right. Some functions have 4 spaces, some 2 tabs, some 6 tabs! And this is inside the same function. God wait until he tries Python...

5. Same dev now suggests that he become the PM. GM approves (very small company). Assigns me to travel to a client since they needed "technical assistance about the API". Was actually there to lead a UAT session.

Intermezzo, that guy went from fullstack dev to PM to sales (yes, one who calls clients to offer products) to business development, to product analyst in the span of two years.

After a year and a half there, I quit.

6. New company, a "QA engineer" who also assumes the role as the product owner. Does absolutely no tests other than "functional tests" in which he NEVER produces any form of documentation. Not even a set of test cases. He goes by "intuition".

7. Same guy as (6), hands me requirements for a feature. By "hands me" I mean he did that verbally. No spec documents, no slack chat, no Trello card. I ended up writing it as a card in Trello. Fast forward to the due date, he flips out because that wasn't what he wanted. Showed him the card. He walked away, without thinking of a solution how this mess should be handled.

Despite all this, I really don't want him (6&7) to leave the company. The devs get really stressed out at this job and he does make a really good person to laugh with/at.

So... my girlfriend has a very random work schedule. Sometimes she works 4 days a week sometimes only 1, sometimes only at the weekend sometimes not at all. If only there would be an app to track that... 🤔
She tried quite a few apps on the app store but they were shit/ugly/too complex..etc
Wait.. i’m a developer, i can do that.
So i made a dead simple calendar-like app in javascript+fuseopen.
She selected the colors, background, layout etc..
If she taps on a date it turns red indicating that is a workday, if a workday is tapped it turns back to normal color.

The main logic is:
Main:
If(AppHasSavedWorkdays){
//check if save is current month
LoadCalendarWithWorkdays();
}else{
CreateEmptyCalendarAndSave();
}

She likes it.
Cool, so let’s build this! She has an iphone and my mac is still in the service center so i can’t build🙁
But its okay, i have a mac at my office, we can build there, the only downside is that is 40min of travel.
We take the subway, go to the office, build the app, make a certificate, install to her phone, everything goes as planned.
Coming back we were lucky enough to catch the bus that goes in 30 min intervals, we only had to wait like a minute so life is good 😃
I enter the house, chill down on the bed, pull out my laptop to close the project when a FUCK ME!!!!
I completely forgot to implement a whole else branch on start!!!
Soo the app does nothing when is opened on january 1😂😂
I guess that’s why we have testers and qa.. 😃

It's enough. I have to quit my job.

December last year I've started working for a company doing finance. Since it was a serious-sounding field, I tought I'd be better off than with my previous employer. Which was kinda the family-agency where you can do pretty much anything you want without any real concequences, nor structures. I liked it, but the professionalism was missing.

Turns out, they do operate more professionally, but the intern mood and commitment is awful. They all pretty much bash on eachother. And the root cause of this and why it will stay like this is simply the Project Lead.

The plan was that I was positioned as glue between Design/UX and Backend to then make the best Frontend for the situation. Since that is somewhat new and has the most potential to get better. Beside, this is what the customer sees everyday.

After just two months, an retrospective and a hell lot of communication with co-workers, I've decided that there is no other way other than to leave.

I had a weekly productivity of 60h+ (work and private, sometimes up to 80h). I had no problems with that, I was happy to work, but since working in this company, my weekly productivity dropped to 25~30h. Not only can I not work for a whole proper work-week, this time still includes private projects. So in hindsight, I efficiently work less than 20h for my actual job.

The Product lead just wants feature on top of feature, our customers don't want to pay concepts, but also won't give us exact specifications on what they want.
Refactoring is forbidden since we get to many issues/bugs on a daily basis so we won't get time.
An re-design is forbidden because that would mean that all Screens have to be re-designed.
The product should be responsive, but none of the components feel finished on Desktop - don't talk about mobile, it doesn't exist.
The Designer next to me has to make 200+ Screens for Desktop and Mobile JUST so we can change the primary colors for an potential new customer, nothing more. Remember that we don't have responsiveness? Guess what, that should be purposely included on the Designs (and it looks awful).
I may hate PHP, but I can still work with it. But not here, this is worse then any ecommerce. I have to fix legacy backend code that has no test coverage. But I haven't touched php for 4 years, letalone wrote sql (I hate it). There should be no reason whatsoever to let me do this kind of work, as FRONTEND ARCHITECT.

After an (short) analysis of the Frontend, I conclude that it is required to be rewritten to 90%. There have been no performance checks for the Client/UI, therefor not only the components behave badly, but the whole system is slow as FUCK! Back in my days I wrote jQuery, but even that shit was faster than the architecuture of this React Multi-instance app. Nothing is shared, most of the AppState correlate to other instances.

The Backend. Oh boy. Not only do we use an shitty outated open-source project with tons of XSS possibillities as base, no we clone that shit and COPY OUR SOURCES ON TOP. But since these people also don't want to write SQL, they tought using Symfony as base on top of the base would be an good idea.
Generally speaking (and done right), this is true. but not then there will be no time and not properly checked. As I said I'm working on Legacy code. And the more I look into it, the more Bugs I find. Nothing too bad, but it's still a bad sign why the webservices are buggy in general. And therefor, the buggyness has to travel into the frontend.

And now the last goodies:
- Composer itself is commited to the repo (the fucking .phar!)
- Deployments never work and every release is done manually
- We commit an "_TRASH" folder
- There is an secret ongoing refactoring in the root of the Project called "_REFACTORING" (right, no branches)
- I cannot test locally, nor have just the Frontend locally connected to the Staging webservices
- I am required to upload my sources I write to an in-house server that get's shared with the other coworkers
- This is the only Linux server here and all of the permissions are fucked up
- We don't have versions, nor builds, we use the current Date as build number, but nothing simple to read, nonono. It's has to be an german Date, with only numbers and has always to end with "00"
- They take security "super serious" but disable the abillity to unlock your device with your fingerprint sensor ON PURPOSE

My brain hurts, maybe I'll post more on this shit fucking cuntfuck company. Sorry to be rude, but this triggers me sooo much!

The only technique I know.

Get hired straight out of uni. Project architect disappears right at beginning and I am left as a graduate employee to build a travel booking web app. Learning new front end and backend frameworks by coding them constantly for the next 8 months.

We might actually get this project done!

Good question, what wasn't bad about 2020?

As far as good things go.. well, COVID-19 actually. Back in February the lockdown began in Belgium, and while many people got bored out of their minds, I actually became a lot more productive. So many projects started back then, and I got a lot better at programming because of it. Now I can confidently write most bash stuff without ever looking anything up. And the code is maintainable, on account of putting everything into functions. You can literally navigate the code just by looking at it. On older code I always had issues with that.

I'm very glad that essential travel even back then wasn't really restricted. Because my bank is retarded about online banking, I have to go to the bank every so often to check my balance. At the time I tended to do that late in the evening, when nobody else was outside and I had the entire town to myself. That was one of the travels considered essential. So I kept doing it and made that my biweekly walk. I really enjoyed that. Gets your mind off things.

Bad things would be the utter stupidity that the general public had shown me during that pandemic. Burning down 5G antennas and not even getting the right ones, toilet paper, 5G death beams in street lamps?! They even sent death threats to telco workers over sensationalist bullshit from what IIRC was just a random Twitch streamer. Those people should just fucking kill themselves, choke yourselves in that pile of toilet paper you got yourself and then called yourself financially challenged. You braindead fucking retards!

Another dev-related thing is the normalization of SJW terminology. Now even "blind playthrough" gets your ass banned on Twitch. I saw a tweet about a Twitch employee (I think) proudly saying that they implemented it. Most upvoted comment on it was from a blind person, asking why they did this and not made the Twitch app more friendly to use for blind users. They too thought this was bullshit. Yet it still got added in, and more and more people are starting to think that "this is fine". Hell even that "this is necessary".

What annoys me the most is that this mostly comes from the US, where around that time they laid their knee on George Floyd, and didn't fix their legal system at all. As a European it baffles me since we have many immigrants here (the Drumpf even called Belgium a hellhole over it) and we just don't give a shit about whether or not they are "truly Belgian". We just let them live their daily lives like everyone else. Imagine just not giving a shit. Imagine not bothering them, not with racism, not with reverse racism, not with anything. Just let them do their thing and that's it. Yet despite Belgium being one of the most inclusive countries in the fucking world, I still got called a racist many times for asking.. why did you implement this? Why this, and not tackling the problem at its actual and pretty fucking obvious core?

So all in all I can only hope that 2021 will get a little bit better. But that's the same thing I said in 2019, and it didn't quite come true.

I need a name for a new app.

It's a spur of the moment travel app that lets you select the temp and humidity ranges you want and finds you the cheapest flights.

Dazzle me please.

I am a junior web developer, currently working in my first job for a small company, I was hired because I have an interest in meteor and modern web dev.

When I say small I mean I am the only full time js dev.

So the project we are working (my first ever professional project from start to finish) is a travel booking web app (being a little vague, for the sake of privacy). I am the lead developer, as a new programmer of a project that is far from trivial. There are no other javascript devs in office, no sort of code review. We have an outsourced dev but as I got in a flow with one dev my boss supposedly told him to do it part time (without discussing with me), but haven't heard anything from him, so assuming he's just disappeared (probably annoyed at being treated like a commodity).

Boss has set up the stages, and forces me to move on to the next stage before that stage has been finished. I will have to go back over the whole thing to finish things off.

He will only hire cheap juniors, one front end guy with barely any experience is styling the site.

He is used to churning out WordPress and Magento sites.

Wish I had a senior I could learn off.

I want to stick at this project and see it through, but i can only see it ending in a train wreck.

At the same time I want out, I want to work under a better team with senior programmers and better code review.

I just have to do my best and see how it goes I guess

I have been working on this software for 3 years now. The code base was a working prototype made by my boss before I came, not more, not less. Php + Angular. Have been refactoring a lot, backend is backed with hundreds of tests now, frontend still lacks a lot. Still a lot of programm structures are still the same weird ones my boss once created in a rush between two meetings while learning Angular to get the prototype finished. Now it's used in production which makes hard to refactor, because we have to maintain backwards compatibility. Neither the parts I added or refactored completely are satisfying, because they are built on this structures, because i never got any feedback for anything I decided and because I changed my own paradigms over time.

So I am all alone on this project. All genuinly new projects are assigned to the new team members (i was the first one, no we are five plus my boss) because I wont have time, have to maintain the old one. So I never can do something new which is quite frustrating.

I did a little side tool, the only thing I invented and did completely by myself in our repertoire - and now some stakeholder shows big interest onto this. Instead of giving me the task to make a real project from this my boss wants to give it to them to develop it. Why? Because I need more time for the main application.

Also the more the software is used the more bug tickets and feature requests come. I was crying for help for months but the others had appareantly more important stuff to do.

This might be true to some extend. Yesterday we had some kind of crisis meeting and my boss wanted again to assing pur junior to help me, who has a shit load of other things to do and is a student. I insisted that this would not be enough, and one of the fulltime devs has to get involved because the thing is our core application and I am only part time btw. So my boss said we wont decide today but one of them should do it. They should have some time to figure out who which is understandable but it's not that I didn't keep saying this for months. Now they are all like whimp whimp when I have to do php i will quit. The new projects are all typescript, with node backend if any. But alas, one of them even said yesterday he doesn't want to do js anymore. Okay... but... this is our tech stack then get another job allready?

And I should do the same probably. But then again I feel very sorry for my boss who helped me in very dark times of corona and more. If both of us leave, the project he worked on for decade (including convincing poeole, collect money..) might be suddenly at it's end while he is so exited about it's access today...

I also get insecure if it's really that they hate php so much or that they don't want to work with me personally because maybe I am a bad team Player or what?

I experienced the same at my old workplace, got left alone with big parts of the project because they didn't want to do php and js in this case and it ended up five devs doing the python backend and me doing the frontend and the php cms part all alone. Then I quit and now everything seems to happen again.

And then again I think I am only fucked up so hard by this stuff because I do not really like being a developer at all. I only do it for the money and because I am good at it (at least i think so. Nobody ever bothers to ever to read my code and give me feedback, because you know, php and js). So I guess I would hate any other job in the field maybe likewise?

This job *is* convinient, salary, office
position, flexibility could not be better. At the end of the day it's not that stressfull. And i don't have any second of freetime (due to family) or energy i could offer a new and more demanding employer, can't work over time or even take a fulltime position, can't home office, can't earn less, can't travel very long to the office and especially can't go back to school to learn something completely new. Some of these constraints are softwe then other naturally but still my posibilities at the Moment are very limited. That might change in about five years if the family situation changed. So it would most likely be reasonable to stay until then at my current job? And bear being alone with this app, don't getting involved on any new project, don't learn anything new, don't invent anything.

There was one potential way out, they considered offering me PHD position to the upcoming ml part of the project... But I learned that I would attend to a bunch of classes at university first, which i would like to, but I don't think i have the time.

I feel trapped somehow. I also feel very lonely in the Office because those fucktards keep saying in home office.

Man, I don't want to go to work today.

A wild project appears!
The deadline is set in two months.

It's a 3D environment interactive app with some oil drilling models and other stuff, for a stand on a show. It needs to look nice, but The Company we're working for needs to figure out where the fuck their product is located on those machines. Think tiny pipes, O-rings etc.

I prepare a build in the first couple of days for The Company to figure shit out.

Management holds the build back because:
> the ocean waves are going the other way
> the underwater area doesn't look so nice
> the antialiasing could be better
> one pipe is 5cm off center
> the sky is not blue enough
> the drillship propellers are pointed the wrong way
> one icon is too far to the right
> the shadows could use some work
> there are shadows on the seabed
> some flickering on ambient occlusion
> it loads too slow
> one random object is flipped on it's Z axis
> it's too green
> camera locks up if you move about 2km out of the range
> the name of the build should represent the date of the build
> the name of the build SHOULDN'T be anything else than just a simple three-word name, no dates because their environment doesn't allow apps that are not allowed (by name) by admin
> lots more random things that won't prevent them from using the app

I'm only a month late, but it's good progress. In about a week I hope we can get some feedback if we can use those models at all and what to showcase.

Then I can work on the basic functionality. And then it's a simple case of time travel to meet the deadline.

The company I used to work for, despite me not working there contacts me to get a verification code because the crappy developer they hired can't change a couple settings on the apple website and add themselves as a developer.

At the start of this all, a couple months back I gave them the code out of courtesy, but at this point, as i'm heavily invested in the development stage of my actual job as a vr developer, I won't take time out of my day to even answer the phone for them.

But what really pisses me off is the person who contacts me, my assumbly best friend, who during the last 12 months has only called me for these codes, so work related shit or just personal shit and never to hang out or play games or generally what we used to do as friends before he got a job at that stupid company doesn't have the balls to tell his boss that i'm busy with my job, that maybe if payment was offered as an incentive that I would be happy to be contacted.

When I left that company I didn't setup anything to make it so they would have to contact me, all I did was add myself as a developer of their app. I also heavily documented everything I did, all the issues I faced and the workarounds I found, and everything including all login information needed to get things working, I went above just "developing" the app I added in all the credits to all work used in the app as partly to make sure we don't get sued for stealing someones work without the right credit.

I hate the fact that I worked for minimum wage and did all of this shit, but I never complained at all about things like the 1 1/2 hour travel time (one way I might add) to my boss, the amount of money I spent on public transportation, the little money left over that I didn't even spend and instead give to my parents.

They know nothing about how hard that year was for me, and if they want to get this code, my so called friend can come chat in person, in his off time and when I'm done working on my own shit and we can discuss terms because this shit is just not fair at all.

Trying to re-type a massive essay I lost because the app refreshed for some reason. I'll try to keep it short (spoiler: I lied).

Recently, I had a conversation with a couple of non-tech people about AI and the fear of computers making humans obsolete. I have some strong (borderline ranty) opinions about this, and thought I'd post here to see what reaction is get.

This is not a "machines will destroy us" post, it's more about the very legitimate great of losing jobs.

- AI is a tool. It's main use would to be help optimise the more complex routine tasks and free up people's time to be more creative in their jobs. Basically, it's the next step of automation.
- Human intuition can never be replaced. Sometimes, things just seem a bit off. Sure, an AI would avoid ever getting in that situation, but only if it had learnt it in the past. A human will always have to be at the helm of any such system.
- Achieving true intelligence and sentience is like trying to travel at the speed of light. The closer you get, the more challenges you face.
- Getting hyped by sensationalist news that claims the end is nigh because two computers optimised the language they used to communicate when trying to reach a goal is stupid. All this shows is that the tech is working as expected and the systems can optimise on the fly. To me, this was a pretty awesome moment.

Now, I'm not saying dystopia is impossible, neither am I saying that it is inevitable. Just like any tool presented to us, if we use it responsibly, we can make life and society a lot better.

Our local travel app went super geeky.

For an "Ad" this is probably really bad because the general public wouldn't even bother checking the binary. + nothing actually happened when I opened the notification. 🙄

!rant

So, when I was young, I wanted to be a freelancing nomad. You know, live the live, work remote and travel.

But I didn't have the bones to pursue that. After 10 years of struggling as a normal "programmer", I did a little of everything. I did normal boring "erp maintenance" in C#, Oracle and some legacy stuff called Visual WEB GUI , which was fun, but required a full 9,5 hours work day, 8:00 am to 6:30pm, and the bosses where squares, and I was young and wanted to try something out of the corporate world.

Then I did some work for a newly funded consulting company that used python, Django, and postgresql, but the bosses promised a lot and delivered none, (I was supposed to work backend and have frontend support, which I did not have, and that hurt my productivity and bosses instead of looking at what they promised but did not deliver, they just discounted my salary 3 months in a row, so Bye bye MFs!!

Then I did some remote work for some guys, that, I managed to sustain for a whole year, the pay was good, the stack was simple, just node.js and pug templates, that gig was good, but communication with the bosses was hard, and eventually things started to get hard for them and me, and we had to say farewell to each other, I miss those guys. This is the only time I remember having fun working, I could work whenever I wanted, I only had to reach the weekly goals, and then my time was mine, I could work from home in the odd hours, or rent a chair in a co working space if I wanted to socialize.

Then fate got me one big gig with a multinational company, and I could hire some people, but I delegated too much and was asking too little of myself, and that project eventually died because I did not know how to negotiate.

So, I quit the whole entrepreneur idea, and got a public job at my University, I was a public employee with all the perks, but none of the fun, I just had to clock-in, work, and clock-out. That experience led me to discover a lot of myself, I worked as a public employee for a year and a half, and in that time, I discovered more about myself than what I learnt in 27 years of previous life experience.

Then, I grew bored of that life, and wanted some action, and I found more than enough fun in a VC funded startup ran by young narcissists that did not have a clue of what they were doing, I helped them organize themselves into "closing stuff", you know, finish the things you say you have finished. Just to give you an idea of what it was like before I got there, the were working for 3 months already on this project, they had on paper 50% of the system done and working, when I tried to use the app, I couldn't even sign-up without hacking some database commands, (this was supposedly done). So I spent a month there teaching these guys how to finish stuff, they got, Sign Up, (their sign up was a mess, it is one of those KYC rich things, that financial apps have), Login, and some core functionality working in a month, while in the previous 4 months they only did parallel work, writing endpoints that were not tried, and an app that did not communicate with the backend. But the bosses weren't happy with me, because I told them time and time again that we were not going to reach the goal they needed to reach to keep receiving funds from the investors, and I had to quit before it became a mayhem of toxic employer/employee relationship.

So now I decided to re-engage with life, I have funds to survive about a month and half, I have a good line of credit in case I need some more funds, and the time of the world.

So wish me luck!!! And I'll be posting often, because I would like opinions, hear from people with similar life experiences and share anecdotes.

Next post, it's going to be about how I discovered taskwarrior, and how implemented my first weekend following some of the aspects of GTD to do all my housekeeping chores, because, I think that organizing myself will be key to survive as a freelancer nomad.

I am almost certain the graph doesn't show the app usage during travel...

This was a one day project :
I created an app that would directly read feeds about our travel website when they hashtag about their experiences on twitter ,and automated it to pass it through a very minimal machine level algorithm to identify the sentiment of the tweet. (Good ,bad and neutral). The analyzer was about 40 percent accurate,but it did better with training the keywords.This not only helped the Global Communications perform better at their work,but were able to close out most of the issues on a day to day basis.

nice, the way too old and confused woman i have to do work for suddenly remembered she has a meeting to showcase my mid-development app next tuesday.

she tells me on a friday the week before where i got holidays to have people build stuff in my (new) flat and i have a 1 week work travel thing next week...

i hate people ugh.

sure i can do this till tuesday, not like that shit takes weeks to get stable >;(

!rant more advice needed for weather API

I am making a spur of the moment travel app built around a weather API. The problem is I need to feed in temperature and humidity for a date and get a list of countries and all the APIs I'm looking at work on location requests.

So, I plan to solve this using a JavaScript webworker and set intervals to build my own database that I can query.

Would it be better to use a script external to my API or keep the business logic internal?

Best answer receives my warm thanks.

P.S. @dfox there should be a non rant section?

So I had an app idea a while back, but didn't do anything with because I couldn't tell if it was stupid or not. Maybe you all can help me with that.

My family was taking a trip to Washington D.C. I hadn't been there before, and wanted to know what it looked like, but when I searched for images of DC, all I got was images of the monuments there, and not the actual city.

So the app allows people to search and find realistic images of places (ie, Washington DC) that shows what that place really looks like, not just what it's famous for. And, now this isn't some major feature I just thought this would be convenient and cool for the user, a pop-up message of some sort that asks if they're planning a trip there, and takes them to a travel guide site, or a hotel room booking site, etc.

So what do you guys think? Yes? No? Maybe?

Also, I didn't list this as a collab because I don't know anything about actually developing an app (I mean, I'd love to learn I just don't have the time), just a bunch of high school level CS stuff.

I am super frustrated and don't have the energy to translate into a general language so here goeas some hinglish venting:

bc bosses ne leni deni kr rkhi hai... itna badhiya relaxed hoke chutti se wapis aaya tha, 2 din me mood ka bhosada kr diya apni harkato se.
yes, bosses , saala systummm chal rha h boss pe boss pe boss ka.
sardi me saare velle huye pade hai to harr aadhe ghnte me meeting le rhe h.

almost saari team ne aukaat dikhai hui hai , koi 5 din ki chutti pe to koi 7 din ki chutti pe, to jo mil rha h bs usi ko pele jaa rhe hai ye ppt ke chode.

mereko ek feature banane ko diya hua h... saala har cheez pehle idhr udhr delegate krke 15 din ke kaam ko 45 din ka bana diya, ab release deadline pass hai to meeting pe meeting rakh rhe h . bhosadiwaalo , meeting rakhne se tumhare baap ka code tumhari maa likhegi?

upr se thand bc.... itti thand me kon tumhare tatte chaatne office jaa rha h? jo jaa rha h usi ko bulao mereko ghr pe rajai me kaam krne do. saala gaand sookh ke aadu ho gyi h thand se, nd inhe fir bhi metro se 2 ghnte lgane ke baad banda office me chahiye . team me bs 7 lund h(technically 5 lund and 2 !lund) nd unke se 5 bahane maar ke ghr pe baithe huye h... ek langoorni manager aa jati h apne boss ke boss ka hilane... nd expect krti hai mai bhi aake saathme hilau. mereko nahi hilana yaar :'(

4 gnte to travel me waste krwa do, parking space maango to bolenge ki tumhara band level kam h, office me inka wifi vpn ke saath apni maa chudata h 2kbps ki speed se . emulator gaand marvate hai, nd fir bhi inhe banda chahiye office me nd feature ready chahiye 2 din me.

agar khud gaand me ungal nahi dete , to inki policies gaand me ungli krti h... saala 9 bje app le saare dev server band... oh maiiyavo din me 5 ghnte meeting rkhne ke baad tumhe lgta h ki koi kaam hua hoga.. nd bande ko khane hugne mootne me bhi 1-2 ghnte chale jaate h ghr pe... ek to tumhara time waste ko compensate krna chah rha hu apni marzi se raat me kaam krke, but tumhari gaand me usse bhi keede hai... to rote raho bc. meri jhaat tumhe degi festure banake Christmas se pehle.. bhupp

saala kachha utaar ke khol ke baith jaata hu, aake saare bosses ekek krke meri maar lo