Join devRant
Do all the things like
++ or -- rants, post your own rants, comment on others' rants and build your customized dev avatar
Sign Up
Pipeless API
From the creators of devRant, Pipeless lets you power real-time personalized recommendations and activity feeds using a simple API
Learn More
Search - "mutate"
-
Still on the primenumbers bender.
Had this idea that if there were subtle correlations between a sufficiently large set of identities and the digits of a prime number, the best way to find it would be to automate the search.
And thats just what I did.
I started with trace matrices.
I actually didn't expect much of it. I was hoping I'd at least get lucky with a few chance coincidences.
My first tests failed miserably. Eight percent here, 10% there. "I might as well just pick a number out of a hat!" I thought.
I scaled it way back and asked if it was possible to predict *just* the first digit of either of the prime factors.
That also failed. Prediction rates were low still. Like 0.08-0.15.
So I automated *that*.
After a couple days of on-and-off again semi-automated searching I stumbled on it.
[1144, 827, 326, 1184, -1, -1, -1, -1]
That little sequence is a series of identities representing different values derived from a randomly generated product.
Each slots into a trace matrice. The results of which predict the first digit of one of our factors, with a 83.2% accuracy even after 10k runs, and rising higher with the number of trials.
It's not much, but I was kind of proud of it.
I'm pushing for finding 90%+ now.
Some improvements include using a different sort of operation to generate results. Or logging all results and finding the digit within each result thats *most* likely to predict our targets, across all results. (right now I just take the digit in the ones column, which works but is an arbitrary decision on my part).
Theres also the fact that it's trivial to correctly guess the digit 25% of the time, simply by guessing 1, 3, 7, or 9, because all primes, except for 2, end in one of these four.
I have also yet to find a trace with a specific bias for predicting either the smaller of two unique factors *or* the larger. But I haven't really looked for one either.
I still need to write a generate that takes specific traces, and lets me mutate some of the values, to push them towards certain 'fitness' levels.
This would be useful not just for very high predictions, but to find traces with very *low* predictions.
Why? Because it would actually allow for the *elimination* of possible digits, much like sudoku, from a given place value in a predicted factor.
I don't know if any of this will even end up working past the first digit. But splitting the odds, between the two unique factors of a prime product, and getting 40+% chance of guessing correctly, isn't too bad I think for a total amateur.
Far cry from a couple years ago claiming I broke prime factorization. People still haven't forgiven me for that, lol.6 -
It is amazing how "we should be working on X instead of Y" can mutate into a situation where "we are working on X as well as Y"2
-
>"We need this project finished for tomorrow"
<"But we don't even know what the client wants for parts X, Y and Z"
I'm currently in a sinking ship of a company that has no proper project management or documentation. Requirements mutate with the lead manager's biorhythms and all projects are delayed because he's incapable of scouting or retaining talent.
Unless I've misread their financial situation, I don't think they'll stay in business throughout the year without some major restructuring.2 -
I think the reason why git beginners have a hard time with it is because the api is a bit untuitive.
For example: if you want to "unstage" staged changes, you run git reset, and if you want to "delete" those changes from your working copy, you git checkout those files.
But then, you find out that you can do all of that if you git add . and git reset --hard.
So you're like "huh..."
And then you discover that if you end the resethard with a branch name/commit id then you also make current branch point to the commit or that branch/commit (respectively).
So you're like "huh..."
And also if you add a commit id or branch name to git checkout, you change the current branch to specified/enter detached state with HEAD pointing to that commit (respectively).
Oh and you don't use git branch to create branches, you use git checkout -b because it's a lot shorter.
So here's a rundown: git reset mutates things related to files, but also mutates things related to branches.
git checkout also mutates things related to files and mutates things related to branches too (in a diff way). Also, creates new branches.
I don't think this is intuitive. We users use the same commands for different purposes with just a different flag.
Commands shouldn't mutate different types of things. But don't composite commands (as in, "smart" commands that mutate different things) shoudln't be a flag in an existing command, it should be a single new command of its own.
Maybe if I reread the internals of git now, I'll be able to disgest the dozens of technical terms they throw at you (they are many). And in my mind, the api will cognitively fit to the explanations.
Here's another one that feels weird too.
If you want to make your changes start on top of someone else's commit, you do git rebase.
But git rebase -i can be used for that, and also to delete, modify changes or message of, reorder or combine previous commits of the current branch.
Maybe the reason why several things we do overlap with the same commands is because they internally do similar things, and while not separating those commands might make it less intuitive, it makes them more sensible? i dunno...
disclaimer: I'm not setting this opinion in stone though, and am aware that git was created by one of the most infuential programmers.6 -
What are your favorite hotkeys? Some of mine:
Super+x: opens xterm(by far my most used hotkey)
Alt+space: opens mutate launcher prompt
Super+Alt+c: opens selectable clipboard history
Super+Alt+d: toggles window decoration
Shift+Alt+4: enables draggable selection rectangle for screenshots(like on a Mac)
Alt+keypad_minus: switch to next virtual desktop
Super+tab: opens rofi for keyboard filterable selection of open applications5 -
My codes has mutate from a minor bug to a monstrous one.
It happened when I try to fix the minor bug. Looks like I add more bugs instead.4 -
senior: we have no reason to change/mutate this property, we don't need a setter method, just set it once in the constructor
also senior: there's no reason to change/mutate this value, but i want you to write a setter method for it3 -
What are some of your Linux desktop preferences and workflow improvements?
I use Mutate for app launching, DDG searches, and a dozen or so scripts I wrote myself.
I like different URLs to open in specific browsers, so I wrote a script called xhttp that determines which browser to open with URL regexes, and used freedesktop to register it as a browser, and set it as my default.
Anything fun you've done?1 -
!rant
Digging though my old emails found this joke sent to me long time ago. Think that originally was posted in a 1997 issue of Computerworld. Maybe you already suffered the effect of the "Opcodes" listed here. Hope that !tl;dr
ARG Agree to Run Garbage
BDM Branch and Destroy Memory
CMN Convert to Mayan Numerals
DDS Damage Disk and Stop
EMR Emit Microwave Radiation
ETO Emulate Toaster Oven
FSE Fake Serious Error
GSI Garble Subsequent Instructions
GQS Go Quarter Speed
HEM Hide Evidence of Malfunction
IDD Inhale Dust and Die
IKI Ignore Keyboard Input
IMU Irradiate and Mutate User
JPF Jam Paper Feed
JUM Jeer at Users Mistake
KFP Kindle Fire in Printer
LNM Launch Nuclear Missiles
MAW Make Aggravating Whine
NNI Neglect Next Instruction
OBU Overheat and Burn if Unattended
PNG Pass Noxious Gas
QWF Quit Working Forever
QVC Question Valid Command
RWD Read Wrong Device
SCE Simulate Correct Execution
SDJ Send Data to Japan
TTC Tangle Tape and Crash
UBC Use Bad Chip
VDP Violate Design Parameters
VMB Verify and Make Bad
WAF Warn After Fact
XID eXchange Instruction with Data
YII Yield to Irresistible Impulse
ZAM Zero All Memory -
Today I read a great article on mutation tests, how to use and why they are important. It looks like a great thing, but...
I have never wrote any unit test in any of my jobs. Nobody in my workplace does that. And now it seems like 100% test coverage is not enough (I remind you, that I have 0%), they all should mutate to check if the quality of unit tests is high.
It seems that I'm left behind. I played with tests in my free time, but it seems the more you write them, the better you get at it, so I should be writing them in my job, where I code most of my time. Not only that, of course, I would also want to ensure that what I'm working on is bug-free.
Still, it will be impossible to introduce unit tests to my project, because they are novelty to the whole team and our deadlines are tight. The other thing is, we are supposed to write minimum viable product, as it is a demo for a client, and every line of code matters. Some might say that we are delusional that after we finish demo we will make things the right way.
Did any one of you have a situation like this? How did you change your boss and team's mind?8 -
I use qemu/KVM on Linux. I love being able to do basically all VM operations with commands. So when I need to use my Windows VM(ie: connect to a WebEx), I pop it on with an integration I wrote for my keyboard launcher(mutate), or just execute an alias over SSH, and connect via VNC. When I'm done, I just shit it down. At this point, Windows has been reduced to just a windowed program that I run.7
-
Fun fact about JavaScript: it's a... bit inconsistent. For example, functions like Array.map, Array.reduce, Array.sort don't mutate the array, but Array.unshift does, and returns array's length after the element was added.5
-
Scrum con religion is after me, I either convert or burn at the stake with scrum masters holding hands and dancing around while chanting the scram commandments.
Scrum will kill every decent developer on the planet and replace them with frauds...
Scrum's stupidity is toxic it's like being exposed to radiation - it makes you mutate into a brainless freak! -
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