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Search - "memory layout"
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TLDR;
Wrote a slick scheduling and communication system allowing me to assign photography resources based on time and location.
I'll tell you a little secret ... I'm not actually a dev. I'm a photographer, pretending to be a dev.
Or ... perhaps it's the other way around? (I spend most of my time writing code these days, but only for me - I write the software I use to run my business).
I own a photography studio - we specialize in youth volleyball photography (mostly 12-18 year old girls with a bit of high school, college and semi-pro thrown in for good measure - it's a hugely popular sport) and travel all over the US (and sometimes Europe) photographing.
As a point of scale, this year we photographed a tournament in Denver that featured 100 volleyball courts (in one room!), playing at the same time.
I'm based in California and fly a crew of part-time staff around to these events, but my father and I drive our booth equipment wherever it needs to go. We usually setup a 30'x90' booth with local servers, download/processing/cashier computers and 45 laptops for viewing/ordering photographs. Not to mention 16' drape and banners, tons of samples, 55' TVs, etc. It's quite the production.
We photograph by paid signup only - when there are upwards of 800 teams/9,600 athletes per weekend playing, and you only have four trained photographers, you've got to manage your resources!
This of course means you have to have a system for taking sign those sign ups, assigning teams to photographers and doing so in the most efficient manner possible based on who is available when the team is playing. (You can waste an awful lot of time walking from one court to another in a large convention center - especially if you have to navigate through large crowds - not to mention exhausting yourself).
So this year I finally added a feature I've wanted for quite some time - an interactive court map. I can take an image of the court layout from the tournament and create an HTML version in our software. As I mouse over requests in one window, the corresponding court is highlighted on the map in another browser window. Each photographer has a color associated with them. When I assign requests to a photographer, the court is color coded with the color of the photographer. This allows me to group assignments to minimize photographer walk time and keep them in a specific area. It's also very easy to look at the map and see unassigned requests and look to see what photographer is nearby.
This year I also integrated with Twilio and setup a simple set of text shortcuts that photographers can use to let our booth staff know where they are, if they have memory cards that need picking up, if they need water/coffee/snack, etc. They can also move assignments on their schedule or send and SOS for help if it looks like they aren't going to be able to photograph a team.
Kind of a CLI via the phone. :)
The additions have turned out to be really useful and has made scheduling and managing the photographers much easier that it was in the past.18 -
I found something really interesting depicted in the image.
It is because of memory alignment / padding.
I could explain it to you guys, but this url would do a far better job:
https://kalapos.net/Blog/ShowPost/...8 -
My first actual rant on devRant:
Fuck corporate companies. Fuck agile development.
In the last 8 months I’ve been with this company, I’ve 1) made the app layout (which was super fucked) compatible with iPad. 2) reduced the apps size by 1/3 of the original size. 3) improved memory usage by double the efficiency, nearly eliminated all memory leaks. 4) gotten employee of the quarter for some of the above mentioned.
After all of this I got a talking to from product manager that “he knows I am a good developer but needs more consistency” after I spent a sprint on one story trying to consolidate front end validation logic and make a “validatableTextField” actually do some validation. So much for the MVVM you promised me.
Also, was promised I’d get some experience with Android, and with a team of 8 devs 6 of which have droid backgrounds and other two are juniors, guess whose only even built the droid project once in 8 months? You guessed it. This company has drained me of all of my knowledge, went against most of its promises to me, and values pushing features to the point of adding tech debt faster than I can solve it.
Unfortunately my personal life relies on this job or I’d quit right away. But you bet your ass I’m passively looking for something and I can’t wait till I get a job offer and quit on these ungrateful hypocrites.5 -
What a new years start..
"Kernel memory leaking Intel processor design flaw forces Linux, Windows redesign"
"Crucially, these updates to both Linux and Windows will incur a performance hit on Intel products. The effects are still being benchmarked, however we're looking at a ballpark figure of five to 30 per cent slow down"
"It is understood the bug is present in modern Intel processors produced in the past decade. It allows normal user programs – from database applications to JavaScript in web browsers – to discern to some extent the layout or contents of protected kernel memory areas."
"The fix is to separate the kernel's memory completely from user processes using what's called Kernel Page Table Isolation, or KPTI. At one point, Forcefully Unmap Complete Kernel With Interrupt Trampolines, aka FUCKWIT, was mulled by the Linux kernel team, giving you an idea of how annoying this has been for the developers."
>How can this security hole be abused?
"At worst, the hole could be abused by programs and logged-in users to read the contents of the kernel's memory."
https://theregister.co.uk/2018/01/...22 -
Looks like despite 20-30 years on the market all popular text / spreadsheet editors are still loading whole file to memory.
What the fucking wankers. WTF are they doing whole day besides changing menu layout and icon colors ?
Clearly development today is lead by bunch of idiots from marketing department accompanied with HR hiring social network self made models.
What a fucked up world.
Let’s add AI to our software but fails to open 150MB csv file.
Great job everyone. Great job.4 -
Title: "Wizard of Alzheimer's: Memories of Magic"
Setting:
You play as an elderly wizard who has been diagnosed with Alzheimer's disease. As your memories fade, so does your grasp on the magical world you once knew. You must navigate the fragmented and ever-changing landscapes of your own mind, casting spells and piecing together the remnants of your magical knowledge to delay the progression of the disease and preserve your most precious memories.
Gameplay:
1. Procedurally generated memories: Each playthrough generates a unique labyrinth of memories, representing different aspects and moments of your life as a wizard.
2. Memory loss mechanic: As you progress through the game, your memories will gradually fade, affecting your abilities, available spells, and the layout of the world around you.
3. Spell crafting: Collect fragments of your magical knowledge and combine them to craft powerful spells. However, as your memory deteriorates, you'll need to adapt your spellcasting to your changing abilities.
4. Mnemonic puzzles: Solve puzzles and challenges that require you to recall specific memories or piece together fragments of your past to progress.
5. Emotional companions: Encounter manifestations of your emotions, such as Joy, Fear, or Regret. Interact with them to gain insight into your past and unlock new abilities or paths forward.
6. Boss battles against Alzheimer's: Face off against physical manifestations of Alzheimer's disease, representing the different stages of cognitive decline. Use your spells and wits to overcome these challenges and momentarily push back the progression of the disease.
7. Memory anchors: Discover and collect significant objects or mementos from your past that serve as memory anchors. These anchors help you maintain a grasp on reality and slow down the rate of memory loss.
8. Branching skill trees: Develop your wizard's abilities across multiple skill trees, focusing on different schools of magic or mental faculties, such as Concentration, Reasoning, or Creativity.
9. Lucid moments: Experience brief periods of clarity where your memories and abilities are temporarily restored. Make the most of these moments to progress further or uncover crucial secrets.
10. Bittersweet ending: As you delve deeper into your own mind, you'll confront the inevitability of your condition while celebrating the rich magical life you've lived. The game's ending will be a poignant reflection on the power of memories and the legacy you leave behind.
In "Wizard of Alzheimer's: Memories of Magic," you'll embark on a deeply personal journey through the fragmented landscapes of a once-powerful mind. As you navigate the challenges posed by Alzheimer's disease, you'll rediscover the magic you once wielded, cherish the memories you hold dear, and leave a lasting impact on the magical world you've called home.
LMAO9 -
I need guidance about my current situation.
I am perfectionist believing in OOP, preventing memory leak in advance, following clean code, best practices, constantly learning about new libraries to reduce custom implementation & improve efficiency.
So even a single bad variable name can trigger my nerves.
I am currently working in a half billion $ IT service company on a maintenance project of 8 year old Android app of security domain product of 1 of the top enterprise company of the world, which sold it to the many leading companies in the world in Govt service, banking, insurance sectors.
It's code quality is such a bad that I get panic attacks & nightmares daily.
Issues are like
- No apk obfuscation, source's everything is openbook, anybody can just unzip apk & open it in Android Studio to see the source.
- logs everywhere about method name invoked,
- static IV & salt for encryption.
- thousands of line code in God classes.
- Irrelevant method names compared to it's functionality.
- Even single item having list takes 2-3 seconds to load
- Lag in navigation between different features' screens.
- For even single thing like different dimension values for different density whole 100+ lines separate layout files for 6 types of densities are written.
- No modularized packages, every class is in single package & there are around 100+ classes.
Owner of the code, my team lead, is too terrified to change even single thing as he don't have coding maturity & no understanding of memory leak, clean code, OOP, in short typical IT 'service' company mentality.
Client is ill-informed or cost-cutting centric so no code review done by them in 8 years.
Feeling much frustrated as I can see it's like a bomb is waiting to blast anytime when some blackhat cracker will take advantage of this.
Need suggestions about this to tackle the situation.10 -
Sharing a first look at a prototype Web Components library I am working on for "fun"
TL;DR left side is pivot (grouped) table, right side is declarative code for it (Everything except the custom formatting is done declaratively, but has the option to be imperative as well).
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TL;DR (Too long, did read):
I'm challenging myself to be creative with the cool new things that browsers offer us. Lani so far has a focus on extreme extensibility, abstraction from dependencies, and optional declarative style.
It's also going to be a micro CSS framework, but that's taking the back-seat.
I wanted to highlight my design here with this table, and the code that is written to produce this result.
First, you can see that the <lani-table> element is reading template, data, and layout information from its child elements. Besides the custom highlighting code (Yellow background in the "Tags" column, and green gradient in the "Score" column), everything can be done without opening even a single script tag.
The <lani-data-source> element is rather special. It's an abstraction of any data source, and you, as a developer can add custom data sources and hook up the handlers to your whim (the element itself uses the "type" attribute to choose a handler. In this case, the handler is "download" which simply sends a fetch request to the server once and downloads the result to memory).
Templates are stored in an html file, not string literals (Which I think really fucks the code) and loaded async, then cached into an object (so that the network tab doesn't get crowded, even if we can count on the HTTP cache). This also has the benefit of allowing me to parse the HTML templates once and then caching the parsed result in memory, so templates are never re-parsed from string no matter how many custom elements are created.
Everything is "compiled" into a single, minified .js file that you include on your page.
I know it's nothing extraordinary, but for something that doesn't need to be compiled, transpiled, packaged, shipped, and kissed goodnight, I think it's a really nice design and I hope to continue work on it and improve it over time1 -
YGGG IM SO CLOSE I CAN ALMOST TASTE IT.
Register allocation pretty much done: you can still juggle registers manually if you want, but you don't have to -- declaring a variable and using it as operand instead of a register is implicitly telling the compiler to handle it for you.
Whats more, spilling to stack is done automatically, keeping track of whether a value is or isnt required so its only done when absolutely necessary. And variables are handled differently depending on wheter they are input, output, or both, so we can eliminate making redundant copies in some cases.
Its a thing of beauty, defenestrating the difficult aspects of assembly, while still writting pure assembly... well, for the most part. There's some C-like sugar that's just too convenient for me not to include.
(x,y)=*F arg0,argN. This piece of shit is the distillation of my very profound meditations on fuckerous thoughtlessness, so let me break it down:
- (x,y)=; fuck you in the ass I can return as many values as I want. You dont need the parens if theres only a single return.
- *F args; some may have thought I was dereferencing a pointer but Im calling F and passing it arguments; the asterisk indicates I want to jump to a symbol rather than read its address or the value stored at it.
To the virtual machine, this is three instructions:
- bind x,y; overwrite these values with Fs output.
- pass arg0,argN; setup the damn parameters.
- call F; you know this one, so perform the deed.
Everything else is generated; these are macro-instructions with some logic attached to them, and theres a step in the compilation dedicated to walking the stupid program for the seventh fucking time that handles the expansion and optimization.
So whats left? Ah shit, classes. Disinfect and open wide mother fucker we're doing OOP without a condom.
Now, obviously, we have to sanitize a lot of what OOP stands for. In general, you can consider every textbook shit, so much so that wiping your ass with their pages would defeat the point of wiping your ass.
Lets say, for simplicity, that every program is a data transform (see: computation) broken down into a multitude of classes that represent the layout and quantity of memory required at different steps, plus the operations performed on said memory.
That is most if not all of the paradigm's merit right there. Everything else that I thought to have found use for was in the end nothing but deranged ways of deriving one thing from another. Telling you I want the size of this worth of space is such an act, and is indeed useful; telling you I want to utilize this as base for that when this itself cannot be directly used is theoretically a poorly worded and overly verbose bitch slap.
Plainly, fucktoys and abstract classes are a mistake, autocorrect these fucking misspelled testicle sax.
None of the remaining deeper lore, or rather sleazy fanfiction, that forms the larger cannon of object oriented as taught by my colleagues makes sufficient sense at this level for me to even consider dumping a steaming fat shit down it's execrable throat, and so I will spare you bearing witness to the inevitable forced coprophagia.
This is what we're left with: structures and procedures. Easy as gobblin pie.
Any F taking pointer-to-struc as it's first argument that is declared within the same namespace can be fetched by an instance of the structure in question. The sugar: x ->* F arg0,argN
Where ->* stands for failed abortion. No, the arrow by itself means fetch me a symbol; the asterisk wants to jump there. So fetch and do. We make it work for all symbols just to be dicks about it.
Anyway, invoking anything like this passes the caller to the callee. If you use the name of the struc rather than a pointer, you get it as a string. Because fuck you, I like Perl.
What else is there to discuss? My mind seems blank, but it is truly blank.
Allocating multitudes of structures, with same or different types, should be done in one go whenever possible. I know I want to do this, and I know whichever way we settle for has to be intuitive, else this entire project has failed.
So my version of new always takes an argument, dont you just love slurping diarrhea. If zero it means call malloc for this one, else it's an address where this instance is to be stored.
What's the big idea? Only the topmost instance in any given hierarchy will trigger an allocation. My compiler could easily perform this analysis because I am unemployed.
So where do you want it on the stack on the heap yyou want to reutilize any piece of ass, where buttocks stands for some adequately sized space in memory -- entirely within the realm of possibility. Furthermore, evicting shit you don't need and replacing it with something else.
Let me tell you, I will give your every object an allocator if you give the chance. I will -- nevermind. This is not for your orifices, porridges, oranges, morpheousness.
Walruses.16 -
Ok so I just changed my keyboard layout to neo2 because qwertz can suck my balls. Looking quite good so far. I've been writing some smaller texts and it looks like you can get used to it quite fast (i also changed because I wanted to learn writing with 10 fingers anyways. Not that I've been writing slowly before, but why not).
The bad thing: all shortcuts (vim etc) feel strange because I have to betray my muscle memory now. So I thought I might also just switch to emacs now. Have to learn it from the beginning but it might be worth it.
Did anyone of you have any experience with neo (german) and what editors did you use?5 -
I hate Intellij Idea but it's best option available to develop in Scala. Improvements in VSCode/Metals is my last hope.
The (few) things I NEED from Intellij:
* Very good autocompletion
* Refactoring tools (renaming, auto imports)
* Search tools (find usages, sub/super-types)
The (many) things I hate of Intellij:
* Layout with panel sizes doesn't behave properly and it scales instead of remaining fixed.
* Tedious 2-hands shortcuts makes the right hand to move a lot from the mouse
* Delays and lag in the UI, freezes on garbage collection
* High memory consumption, high CPU usage and generally slow and cumbersome
* The delay in the UI between commands is so that it's accidentally possible to introduce typos
* Can't move tabs around and organize them as I like
* Ugly font rendering and missing typography settings
* Multi-caret implementation as a different editing mode is annoying because requires frequent switching
* Unnatural code folding regions, why method arguments are not folded with the method?
* Unhelpful support forum, sometimes dismissive answers
* Highlighting of current word under the caret doesn't work
* Very slow editor, can't keep spacebar pressed to move text or it hangs!
* Several settings reset at every update. Like the auto fetch of git
* New features are added and enabled by default which is very invasive
* Some of the features mentioned above are really annoying and it's not possible/not trivial to disable them
* It uses its own compile and several times it highlights false positives7 -
MOTHERFUCKING Stripe !!!
Changed their dashboard layout !! Yes, let's move the top navbar to the left and change the whole layout. Oh yeah, and let's make the page less responsive than before.
I seriously don't understand why Stripe had to do this. Their dashboard layout was completely fine and useful but noooo lets change the navbar from the top to the left.
Because of these fucks, I now have to train my muscle memory to get used to this SHITTY ASS layout.
Fuck this. FUCK ALL OF THIS.2 -
is there any way to convert python straight to C yet? i just barely can't get PyInstaller working on PythonD because no os.fork() (because DOS. no, not cmd.exe, actual fucking DOS.)
one broken function between me and victory
"just use C" DJGPP is kicking my ass all the same, random unknown segfaults are a bitch and also i can't get quite what i want in the memory layout restrictions i have to work under
"just use Assembly/BASIC" their file handling makes me wanna die and BASIC is fucking massive as well18 -
When i took CS operating system class few years ago there was discussion on layout of memory and how to retrieve things faster. There was a point where we were asked question on locality and i was first to shoot my hand and prof looked at me : i was eager to answer locality of refrences, i knew temporal locality but i forgot the other one. That is when he told me to remeber Einstein and his space time principal. Instantly i remembered spatial locality. Till this date after so many years i remeber the concept! Woohoo to all the awesome teachers!!