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Search - "more recursion"
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My programming teacher is a freaking degenerate. He spend 7 months teaching us basic stuff like if-clauses, while-loops and stuff like that over and over again - everyone was annoyed but he didn't listen to us because "some people still don't get it". (The reason for this could be their total absence during lessons but who am I to tell.)
Beginning of 2018 he realised we hadn't much time left to prepare for our final exam so he tried self-taught learning. 8 sorting algorithms, recursion, how to write classes and objects in less than a week. And of course there was a classtest about this - needless to say that like nobody passed it. He still has no clue why we are "so lazy and dumb".
One of his favourite code examples is a calculator. I don't know how many i've programmed and they've gotten more and more ridiculous. (Who the hell would want interfaces like IComparer in a calculator?)
He even wanted to convince us that for-loops can't count down (and that things like "i--" doen't exist.)
I could go on and on about this guy and his craziness.27 -
I have to let it out. It's been brewing for years now.
Why does MySQL still exist?
Really, WHY?!
It was lousy as hell 8 years ago, and since then it hasn't changed one bit. Why do people use it?
First off, it doesn't conform to standards, allowing you to aggregate without explicitly grouping, in which case you get god knows what type of shit in there, and then everybody asks why the numbers are so weird.
Second... it's $(CURRENT_YEAR) for fucks sake! This is the time of large data sets and complex requirements from those data sets. Just an hour through SO will show you dozens of poor people trying to do with MySQL what MySQL just can't do because it's stupid.
Recursion? 4 lines in any other large RDBMS, and tough luck in MySQL. So what next? Are you supposed to use Lemograph alongside MySQL just because you don't know that PostgreSQL is free and super fast?
Window functions to mix rows and do neat stuff? Naaah, who the hell needs that, right? Who needs to find the products ordered by the customer with the biggest order anyway? Oh you need that actually? Well you should write 3-4 queries, nest them in an incredibly fucked up way, summon a demon and feed it the first menstrual blood of your virgin daughter.
There used to be some excuses in the past "but but but, shared hosting only has MySQL". Which was wrong by the way. This was true only for big hosting names, and for people who didn't bother searching for alternatives. And now it's even better, since VPS and PaaS solutions are now available at prices lower than shared hosting, which give you better speed, performance and stability than shared hosting ever did.
"But but but Wordpress uses MySQL" - well then kill it! There are other platforms out there, that aren't just outrageously horrible on the inside and outside. Wordpress is crap, and work on it pays crap. Learn Laravel, Symfony, Zend, or even Drupal. You'll be able to create much more value than those shitty Wordpress sites that nobody ever visits or pay money on.
"But but but my client wants some static pages presented beside their online shop" - so why use Wordpress then? Static pages are static pages. Whip up a basic MVC set-up in literally any framework out there, avoid MySQL, include a basic ACL package for that framework, create a controller where you add a CKEditor to edit page content, and stick a nice template from themeforest for that page and be done with that shit! Save the mock-up for later use if you do that stuff often. Or if you're lazy to even do that, then take up Drupal.
But sure, this is going a bit over the scope. I actually don't care where you insert content for your few pages. It can be a JSON file for all I care. But if I catch you doing an e-commerce solution, or anything else than just text storage, on MySQL, I'll literally start re-assessing your ability to think rationally.11 -
I'm 20, and I consider myself to be as junior as they come. I only started programming seriously in June 2016,and since then, I've been doing mainly Android Work, and making my own servers and backends(using AWS/Firebase nd stuff).
For the first time in life, I was approached by a recruiter for a company on linkedIn. They "stumbled upon" my Github profile and wanted to see if I was interested in an internship opportunity. This company is an early stage start up, by that I mean a dude with an idea calling himself the CEO and a guy who "runs a tech blog" and only knows college level C programming (explaination follows).
So they want me to make the app for their startup. and for that, I ws first asked to solve a couple problems to prove my competence and a "technical interview" followed.
They gave me 3 questions, all textbook, GCD of 2 numbers, binary search and Adding an element to the linked List, code to be written on a piece of paper. As the position was that of an Android Developer, I assumed that Java should be the language of choice. Assumed because when I asked, the 'tech blogger' said, yeah whatever.
But wait, that ain't all, as soon as I was done, Mr. Blogger threw a fit, saying I shouldn't assume and that I must write it in C. I kept my cool (I'm not the most patient person), and wrote the whole thing in C.
He read it, and asked me what I've written and then told me how wrong I was to write 2 extra lines instead of recursion for GCD. I explained that with numbers large enough, we run the risk of getting a stackoverflow and it's best to apply non recursive solution if possible. He just heard stackoverflow and accused me of cheating. I should have left right then, but I don't know why, I apologized and again, in detail explained what was happening to this fucktard. Once this was done, He asked me how, if I had to, I'd use this exact code in my Android App. I told him that Id rather write this in Java/Kotlin since those are the languages native to Android apps. I also said that I'd export these as a Library and use JNI for the task. (I don't actually know how, I figured I can study if I have to).
Here's his reply, "WTF! We don't want to make the app in Java, we will use C (Yeh, not C++, C). and Don't use these fancy TOOLS like JNI or Kotlin in front of me, make a proper application."
By this I was clear that this guy is not fit to be technical lead and that I should leave. I said, "Sir, I don't know how, if even possible, can we make an Android App purely in C. I am sorry, but this job is not for me".
I got up and was about to leave the room, when we said, "Yeah okay, I was just testing you".
Yeah right, the guy's face looked like a howling monkey when I said Library for C, and It has been easier for me to explain code to my 10 year old cousin that this dumbfuck.
He then proceeded to ask me about my availability, and I said that I can at max to 15-20 hours a week since my college schedule is pretty tight. I asked me to get him a prototype in 2 months and also offered me a full time job after I graduate. (That'd be 2 years from now). I said thank you for the offer, but I am still not sure of I am the right person for this job.
He then said, "Oh you will be when I tell you your monthly stipend."
I stopped for a second, because, money.
And then he proceeded to say 2 words which made me walk out without saying a single word.
"One Thousand".
I live in India, 1000 INR translates to roughly $15. I made 25 times that by doing nothing more than add a web view to an activity and render a company's responsive website in it so it looks like an app.
If this wasn't enough, the recruiter later had the audacity to blame me for it and tell me how lucky I am to even get an offer "so good".
Fuck inexperienced assholes trying shit they don't understand and thinking that the other guy is shitsworth.10 -
Was joking with my sister about who has more steps. She had done more steps so far, so I said that I would walk 20 times around the McDonald's, where we were going to eat. She replied that she would walk 50 times around it, so I said that I would walk 2 times more around it than she would. She then said, that she would go once more around it. In the end, I explained recursion and infinite loops to her. Her comment was "großer Blödsinn" (German) -> "big bullshit".3
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A dev team has been spending the past couple of weeks working on a 'generic rule engine' to validate a marketing process. The “Buy 5, get 10% off” kind of promotions.
The UI has all the great bits, drop-downs, various data lookups, etc etc..
What the dev is storing the database is the actual string representation FieldA=“Buy 5, get 10% off” that is “built” from the UI.
Might be OK, but now they want to apply that string to an actual order. Extract ‘5’, the word ‘Buy’ to apply to the purchase quantity rule, ‘10%’ and the word ‘off’ to subtract from the total.
Dev asked me:
Dev: “How can I use reflection to parse the string and determine what are integers, decimals, and percents?”
Me: “That sounds complicated. Why would you do that?”
Dev: “It’s only a string. Parsing it was easy. First we need to know how to extract numbers and be able to compare them.”
Me: “I’ve seen the data structures, wouldn’t it be easier to serialize the objects to JSON and store the string in the database? When you deserialize, you won’t have to parse or do any kind of reflection. You should try to keep the rule behavior as simple as possible. Developing your own tokenizer that relies on reflection and hoping the UI doesn’t change isn’t going to be reliable.”
Dev: “Tokens!...yea…tokens…that’s what we want. I’ll come up with a tokenizing algorithm that can utilize recursion and reflection to extract all the comparable data structures.”
Me: “Wow…uh…no, don’t do that. The UI already has to map the data, just make it easy on yourself and serialize that object. It’s like one line of code to serialize and deserialize.”
Dev: “I don’t know…sounds like magic. Using tokens seems like the more straightforward O-O approach. Thanks anyway.”
I probably getting too old to keep up with these kids, I have no idea what the frack he was talking about. Not sure if they are too smart or I’m too stupid/lazy. Either way, I keeping my name as far away from that project as possible.4 -
What the hell was I thinking at when I wrote this nice interface wrapper...
What bothers me more is that gcc didn't warned me about such obvious recursion...3 -
Probably the MOST complete software book on a very broad subject.
This is book to read for those of you are near college grad, first job in the industry. But to the level of detail and broad coverage this book has I think it’s actually a great book for everyone in the industry almost as a “baseline”
From requirements, project planning, workflow paradigms. Software Architecture design, variable naming, refactoring, testing, releasing the book covers everything, not only high level but also in reference to C.
Why C ...because in the consumer electronics, automotive industry, medical electronics and other industries creating physical products c is the language of choice, no changing that. BUT it’s not a C book... it contains C and goes into dept into C but it’s not a C book, C is more like a vehicle for the book, because there are long established, successful industry’s built around it. Plenty of examples.
When I say it’s the most complete on a broad subject seriously like example the chapter about the C language is not a brief over like many other books, for example 10 pages alone are dedicated to just pointer! Many C books have only a few paragraphs on the subject. This goes on depth.
Other topics, recursion, how to write documentation for your code.
Lots of detail and philosophy of the construction of software.
Even if you are a veteran software engineer you could probably learn a thing or two from the book.
It’s not book that you can finish in weekend, unless you can read and comprehend over 1000 pages.
Very few books cover such a broad topic ALL while still going into great detail on those subtopics. the second part is what lacks in most “broad topic books” ..
Code Complete.. is definitely “Complete”
So the image doesn’t match the rest of my book images because I tried to make an amage to cover of the book, inception style kinda haha 😂19 -
Despite common sense, I think technology is not making our lives easier. It's just build chaos on top of chaos.
Take server-side programming for instance.
First you have to find someone to host your thing, or a PaaS provider. Then you have to figure out how much RAM and storage you need, which OS you're going to use. And then there's Docker (which will run on top of a VM on AWS or GCP anyway, making even less sense). And then there's the server technology: nginx, Apache (and many many more; if, that is, you're using a server at all). And then there are firewalls, proxies, SSL. And then you go back to the start, because you have to check if your hosting provider will support the OS or Docker or your server. (I smell infinite recursion here.)
Each of these moving parts come with their own can of worms in terms of configuration and security. A whole bible to read if you want to have the slightest clue about what you're doing.
And then there's the programming language to use and its accompanying frameworks. Can they replace the server technology? Should you? Will they conflict with each other and open yet another backdoor into your system? Is it supported by your hosting provider? (Did I mention an infinite recursion somewhere?)
And then there's the database. Does it have a port to the language/framework of your choosing? Why does it expose an web interface? Is it supposed to replace your server? And why are its security features optional again? (Just so I have to test both the insecure and the secure environments?)
And you haven't written a single line of code yet, mind you.4 -
I'm absolutely loving the fact that my university is making me take their intro to programming course this fall when I've taken 5 programming classes in high school and already have intro to programming credits from a different university. Did I mention that I passed the AP Computer Science exam before taking even more courses? Do they not understand that I do in fact understand how to use recursion(the most advanced topic in their intro course) and don't need to spend a semester relearning what I already know? For Christ's sake they don't even get into OOP in that course.3
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Should I be excited or concerned?
Newbie dev(babydev) who just learned string vs int and the word "boolean", is SUPER into data parsing, extrapolation and recursion... without knowing what any of those terms.
2 ½ hrs later. still nothing... assuming he was confused, I set up a 'quick' call...near 3 hrs later I think he got that it was only meant so I could see if/where he didnt understand... not dive into building extensive data arch... hopefully.
So, we need some basic af PHP forms for some public-provided input into a mySQL db. I figured I'd have him look up mySQL variables/fields, teach him a bit about proper db/field setup and give him something to practice on his currently untouched linux container I just set up so he could have a static ipv4 and cli on our new block (yea... he's spoiled, but has no clue).
I asked him to list some traits of X that he thinks could be relevant. Then to essentially briefly explain the logic to deciding/returning the values/how to store in the db... essentially basic conditionals and for loops... which is also quite new to him.
I love databases; I know I'm not in the majority... I assumed he'd get a couple traits in his mind and exhaust himself breaking them down. I was wrong. He was/likely is in his sleep now, over complicating something that was just meant as a basic af.
Fyi, the company is currently weighted towards more autistics (him and myself included) than neurotypicals.
I know I was(still am) extremely abnormal, especially when it comes to things like data.
So, should I be concerned/have him focus elsewhere for a bit?... I dont want to have him burnout before he even gets to installing mySQL44 -
Here’s the second book for today.
Another small 100 page or so book.
It’s called advanced programming techniques, personally I don’t like the title, I don’t consider most of the items in here advanced, I would consider them more “better ways of solving a problem”, they do talk about recursion and linked lists, so I guess that could be a little advanced.
But like table based solutions is not advanced it’s just a technique that allows for simpler, scale able and main table code.. I been doing it for a long time, most easiest way to determine if something can turn into a table solution is look for a function that has a bunch of calls to the same function or something of that nature lots of repeated code with slight changes in a function or range of functions .. those of simplist way of “tablefiying”a solution I will picture the example from the book below.
The book, is all in java except for linked lists Thats in C..
But anyway this book is a great quick reference book, into the pile with programming pearls book, and those like that.14 -
I just solved a recursion problem without using recursion.
Yes, it's roughly 4 times more code, but at least I understand what the hell is happening.4 -
Back from the dead with more vaguely-obscure technical bullshit
Working on a chatbot for my BS-CS. Almost done with college, so the assignment is to make a bot that recommends you a CS career. Cool.
I get through making a joint personality and skill-interest quiz that gives you number grades on different spectra. So far, so good. But this project has to be done entirely in pandorabots' online editor. So no scripting. Zero scripting. 100% markup language. That means to even do math, you need to copy a standard library off GitHub.
I mean, that's fine and all, but the syntax is just atrocious, because everything in AIML is input->response. If you ask the bot "what is 5+5?" you must have it go:
- recognize pattern WHAT IS * + *
-> redirect -> XADD * XS *
-> do math -> recurse result
-> 10
uncomfy. Plus, variables can only be accessed through <get> and <set> tags. But mangeable.
So here's where the story becomes a rant.
In the standard docs, there's all these math functions, and they work. There's also logic.
And then there's this fucker
XIF [ * ] XS [ * ]
Which has no documentation and just doesn't work. No idea what the brackets mean. Tried putting in TRUE, tried putting in true math statements (5 XEQ 5), tried putting in recursion tags to trick it, tried everything. It just ignores it.
There is not a single comment, stackOverflow post, or youtube video that even acknowledges the existence of this thing.
So unless I want to convert the entire logic of my program into nested SWITCH statements with the <condition> tag, I'm just fucked.
The icing on the cake is, I go to tech support on Pandorabots to ask for help with this. What do they have except a chatbot to cheerfully tell me that no humans are around to help me right now?
gonna have to build an entire fuckin turing machine in markup tags to calculate whether x = 3
(:1 -
I work for an investment wank. Worked for a few. The classic setup - it's like something out of a museum, and they HATE engineers. You are only of value if work on the trade floor close to the money.
They treat software engineering like it's data entry. For the local roles they demand x number of years experience, but almost all roles are outsourced, and they take literally ANYONE the agency offers. Most of them can't even write a for loop. They don't know what recursion is.
If you put in a tech test, the agency cries to a PMO, who calls you a bully, and hires the clueless intern. An intern or two is great, if they have passion, but you don't want a whole department staffed by interns, especially ones who make clear they only took this job for the money. Literally takes 100 people to change a lightbulb. More meetings and bullshit than development.
The Head of Engineering worked with Cobol, can't write code, has no idea what anyone does, hates Agile, hates JIRA. Clueless, bitter, insecure dinosaur. In no position to know who to hire or what developers should be doing. Randomly deletes tickets and epics from JIRA in spite, then screams about deadlines.
Testing is the same in all 3 environments - Dev, SIT, and UAT. They have literally deployment instructions they run in all 3 - that is their "testing". The Head of Engineering doesn't believe test automation is possible.
They literally don't have architects. Literally no form of technical leadership whatsoever. Just screaming PMOs and lots of intern devs.
PMO full of lots of BAs refuses to use JIRA. Doesn't think it is its job to talk to the clients. Does nothing really except demands 2 hour phone calls every day which ALL developers and testers must attend to get shouted at. No screenshare. Just pure chaos. No system. Not Agile. Not Waterfall. Just spam the shit out of you, literally 2,000 emails a day, then scream if one task was missed.
Developers, PMO, everyone spends ALL day in Zoom. Zoom call after call. Almost no code is ever written. Whatever code is written is so bad. No design patterns. Hardcoded to death. Then when a new feature comes in that should take the day, it takes these unskilled devs 6 months, with PMO screaming like a banshee, demanding literally 12 hours days and weekends.
Everything on spreadsheets. Every JIRA ticket is copy pasted to Excel and emailed around, though Excel can do this.
The DevOps team doesn't know how to use Jenkins or GitHub.
You are not allowed to use NoSQL database because it is high risk.2 -
My Gripe With Implicit Returns
In my experience I've found that wherever possible code should be WYSIWYG in terms of the effects per statement. Intent and the effects thereof should always be explicit per statement, not implicit, otherwise effects not intended will eventually slip in, and be missed.
It's hard to catch, and fix the effects of a statement intent where the statement in question is *implicit* because the effect is a *byproduct* of another statement.
Worse still, this sort of design encourages 'pyramid coding recursion hell', where some users will first decompose their program into respective scopes, and then return and compose them..atomically as possible, meaning execution flow becomes distorted, run time state becomes dependent not on obvious plain-at-sight code, but on the run time state itself. This I've found is a symptom of people who have spent too much time with LISP or other eye-stabbingly fucky abominations. Finally implicit returns encourage a form of thinking where programmers attempt to write code that 'just works' without thinking about how it *looks* or reads. The problem with opaque-programming is that while it may or may not be effortless, much more time is spent in reading, debugging, understanding, and maintaining code than is spent writing it--which is obviously problematic if we have a bunch of invisible returns everywhere, which requires new developers reading it to stop each and every time to decide whether to mentally 'insert' a return statement.
This really isn't a rant, as much as an old bitter gripe from the guy that got stuck with the job of debugging. And admittedly I've admired lisp from afar, but I didn't want to catch the "everything is functional, DOWN WITH THE STATE" fever, I'm no radical.
Just god damn, think of the future programmer who may have to read your code eventually.2 -
>Be me, humble physicist turned quantitative developer
>Big physics nerd, but code for the cash
>Working on some quantitative finance software, all about risk measures
>Girl comes over one day, cute as a quark
>Think to myself, "This is it, time to make a move"
>Instead, brain decides it's time to explain my work
>Start rambling about refactoring, polymorphism, and data encapsulation
>She's looking at me like I've started speaking in binary
>She tries to steer the conversation back to normal stuff, but I'm stuck in a recursion loop
>Keep going on about my project, can't seem to stop myself
>She tries to stay longer, even tries to show interest in my work
>But the more I talk about algorithms and time complexity, the more her eyes glaze over
>Eventually, she gives up, says she has to leave
>She leaves, probably thinks I'm more interested in my code than her
>mfw I realize I've chosen code over companionship
>Why am I like this?10 -
Trying out the new version of fasm, I realize it's good, and conclude I should update my code to work with it as there's small incompatibilities with the syntax.
So, quick flat assembler lesson: the macro system is freaking nuts, but there are limitations on the old version.
One issue, for instance, is recursive macros aren't easily possible. By "easily" I mean without resorting to black magic, of course. Utilizing the arcane power of crack, I can automatically define the same macro multiple times, up to a maximum recursion depth. But it's a flimsy patch, on top of stupid, and also has limitations. New version fixes this.
Another problem is capturing lines of code. It's not impossible, again, but a pain in the ass that requires too much drug-addled wizardry to deal with. Also fixed in new version.
Why would you want to capture lines of code? Well, because I can do this, for instance:
macro parse line {
··match a =+ b , line \{
····add a,b;
··\}
};
You can process lines of code like this. The above is a trivial example that makes no fucking sense, but essentially the assembler allows you define your own syntax, and with sufficient patience, you can use this feature to develop absolutely super fucking humongous galactic unrolls, so it's a fantastic code emitter.
Anyway, the third major issue is `{}` curlies have to be escaped according to the nesting level as seen in the example; this is due to a parser limitation. [#] hashes and [`] backticks, which are used to concatenate and stringify tokens respectively, have to be escaped as well depending on the nesting level at which the token originates. This was also fixed.
There's other minor problems but that gives you sufficient context. What happens is the new version of fasm fixes all of these problems that were either annoying me, forcing me to write much more mystical code than I'd normally agree to, and in some rare cases even limiting me in what I could do...
But "limiting" needs to be contextualized as well: I understand fasm macros well enough to write a virtual machine with them. Wish I was kidding. I called it the Arcane 9 Machine, A9M for short. Here, bitch was the prototype for the VM my fucking compiler uses: https://github.com/Liebranca/forge/...
So how am I """limited""", then? You wouldn't understand. As much as I hate to say it, that which should immediately be called into question, you're gonna have to trust me. There are many further extravagant affronts to humanity that I yearn to commit with absolute impunity, and I will NOT be DENIED.
Point is code can be rewritten in much simpler, shorter, cleaner form.
Logic can be much more intricate and sophisticated.
Recursion is no longer a problem.
Namespaces are now a thing.
Capturing -- and processing -- lines of code is easier than ever...
Nearly every problem I had with fasm is gone with this update: thusly, my power grows rather... exponentially.
And I SWEAR that I will NOT use it for good. I shall be the most corrupt, bloodthirsty, deranged tyrant ever known to this accursed digital landscape of broken souls and forgotten dreams.
*I* will reforge the world with black smoldering flame.
*I* will bury my enemies in ill-and-damned obsidian caskets.
And *I* will feed their armies to a gigantic, ravenous mass grave...
Yes... YES! This is the moment!
PREPARE THE RITUAL ROOM (https://youtube.com/watch/...)
Couriers! Ride towards the homeland! Bring word of our success.
And you, page, fetch me my sombersteel graver...
I shall inscribe the spell into these very walls...
in the ELEVENTH degree!
** MANIACAL EVIL LAUGHTER ** -
Gonna teach someone conpletely new to programming some C#. What are some good exercises I can give them to understand general programming well?
So far I'm thinking FizzBuzz, some progressively more complex math+logic stuff and maybe fibonacci using recursion.11 -
Hey Guys!
@alexdovzhanyn and I just released the third episode of Runtimerror Live!
We talk about various things like the DynDDoS attack, recursion and much more.
https://runtimerror.com/podcast/...
We hope you enjoy it as much as we enjoyed recording it :)1 -
My university had a Programming Fundamentals course in the first semester and we got assigned this grumpy lady who demanded respect and would always claim she was the best at programming among her colleagues, had an obnoxiously snobbish tone and had a habit of forcing unneeded nonsensical sarcasm everytime one of us stepped up to ask her a question.
She taught C++ and I'm not saying she didn't know her stuff or anything; I respected her regardless (because she was my teacher), but she would mix up C classes in and insist that that was the right way to do it and had no consistent programming style.
Once she got so fed up with our class that just to prove her point that we're all dumb and worthless (she hated us a lot, yeah) that she started explaining binary trees and recursion out of the blue and gave us assignments for them... even though they weren't going to be covered that week. It soon became a shitfest, to be honest.
But on the plus side, because I didn't wanna listen to her lectures I pulled two all-nighters and covered the semester's worth of C++ and started napping in a corner in her class. She never had personal beef with me so I was thankful for that but her being the way she was helped me learn C++ with more motivation and vigor than I normally would have and also let me earn some change because my classmates couldn't understand her classes and wanted me to explain whatever she covered. -
Week 1 day 3 and 4.
I didn't feel like I did a whole lot yesterday so I just pushed it into today. In the past I tried to program for hours everyday and expect to keep up my stamina for it but it didn't work so this time I'll just take days off every now and then and see if that works at all. Yesterday was one of those, the only thing I did was watch some videos on OOP and practice some more with OOP and recursion.
As far as today goes I started sketching our the ideas for my own personal app I hope to develop once I get the skill set. I tried to focus on looking at it not just from the perspective of a developer but also a user and a marketer to see vialibity and such but I have a LONG time to go before I can get my idea rolling. I decided to push starting the actual course until tomorrow because Ina small questionnaire before you go into it it asks if you're familliar with threading and networking, which I am not. So that was my main focus today, expanding my base Java skill set. If any Android Devs can give from their experience want I need to know I would love that but other than that I feel pretty good about what I did today. -
I'm in a big fat fucking stinking rut, as in progress on this project has absolutely stagnanted.
Gonna rubber face your duck now **UNZIPS** excepts I don't have zippers, as joggers are the one true way; fake Adidas til I fucking drop.
Brain damage aside, I understand both how I've layed out the data and what I'm supposed to do with it. We have a virtual machine, an array of instructions and arguments for a given process within it, and we need to walk this array and map values to registers.
We also need to spill values inside registers to stack, IF they are required at a further point within that block. This also isn't terribly complex. We simply look forward in the array and see if the value is an argument to any instruction that *needs* this value to be loaded (ie, within a register).
So this implies multiple iterations; we need to better understand how one particular value is used throughout an F before we can make a final decision on how many registers and stack space are actually needed for the whole block.
Here's where it gets tricky. If there's a call, we need to be certain that the symbol being invoked has already been fully processed. Besides the obvious fact that recursion fucks me up, there's another matter: say a private method gets invoked by another private method. We can take advantage of this, by which I mean, sacrilege incoming so put on this toga.
Looking at the output for C compilers, it would seem this is not done in practice, I would assume because it's a pain in the ass. But when you have the guarantee that F will only be called internally, as that's what "private" means, there's two ways it can go:
0. It's well below the 13-20 cycle threshold, so you inline the fucker. No suprises there.
1. It's a more involved affaire, and invoked in more than one place, so you don't inline it. Codesize matters.
Recursion and [1] are the big deal things holding me back. Not because it's too hard, like I said this is kindergarten level abstraction. I'm just slow and fanatical, which is how I prefer to spell "constant obsessive paranoid delusions". I can see the potential optimization I can pull here, so I'm stuck trying to figure it out.
Idea would be, handling the register allocation and stack spill for an internal-internal (or deep internal; what we like to call a "guts" method) in synchronization with the *calling* processes. This is, fundamentally, violating all conventions -- but so under the hood no one will notice.
Let me give you an example. If we were to pass some value to a function, expecting to mutate it and get a different value back, in a lot of cases it'd be stupid to make an implicit copy by using two registers, one for input and another for the output. Dude, it's one cycle. Multiply it by a million, say sixty times per second, for every time you __needlessly__ make a copy of a value that we've already stated is mutable.
Clearly unacceptable. This is, in the strictest sense, everywhere in every single codebase. Premature micro optimization is the root of all goodness, God is great and praiseworthy. So how do we go about it?
Answer is I know and I don't know. By which I mean to say, this very thing I've done by hand. Assembly is fun. Now the issue is teaching a calculator how to do it. Not so fun.
There is a dependency chain between processes, as I believe I've kind of alluded to. I'm trying to make decisions on the side of the caller depending on the details of the callee, which is why recursion is rawdogging my soul. This is the same situation, it's inverting the direction of one or more links in the dependency chain, which makes no fucking sense.
And yet it does.
Brain, explain yourself.
How do *you* handle this without crashing?
Brain?
<<ME STEWPED; BEEP-BOOP>>
Alright then, that was a useless attempt at fuckery. Let's have a nap then, maybe it'll come to me in the morning. That's what I've been saying to myself for almost a month now.
Perhaps it is a hardcoded fuk.1 -
It was one of those "I need more coffee days"..
I was writing some checking function called "check" (now to clarify my company is not coding oop style so no classes etc.) And as I went on I included another file for some functions and what not. Pretty normal stuff right? Right. In that file I required there also was a function called "check".
Guess who tried to use the "check" function of the imported file in the "check" function?! Right! A Fucking genius aka. me!!
So I tried to figure out why the page wouldn't load and why the server was starting to lag more and more.
After killing all the apache tasks three times i finally realized what I did.
Took me 10 minutes to figure out that i was causing endless recursion. That day wasn't my best and clearly not filled with enough coffee.
PS: yes I know oop would have probably eliminated the possibility for this but I'm just adapting to the coding style of my company as I can't really change things since I'm just an intern.1 -
Yeah it's just me.
*when your recursion function suddenly worked and you still can't figure out why it worked...*
Guess I need to improve on my algorithms more. Just can't wrap my head around even a quite simple recursion. I'm certain this won't last long. -
IF I see something infinite and more than three.
and never more than three in real world.
I use recursion.
because who knows, people are crazy.
myself included. -
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