These setups are really convenient and cheap, and form a decent way to try out a new website with simple requirements.
This feels good.
One problem though is that Heruku is very opinionated, a likely like other PaaSes. So if you are trying something that is slightly off the mos common use case, you might be fucked.
Deployment:
git push heroku HEAD:masterView stdout logs:
heroku logs --tailPostgreSQL database, it seems to be delegated to AWS. How to browse database: https://stackoverflow.com/questions/20410873/how-can-i-browse-my-heroku-database
heroku pg:psqlDrop and recreate database:
All tables are destroyed.
heroku pg:reset --confirm <app-name>Restart app:
heroku restartArghh, why so hard... tested 2021:
- Mailgun: the Heroku add-on creates a free plan. This is smaller than the flex plan and does not allow custom domains, and is not available when signing up on mailgun.com directly: https://help.mailgun.com/hc/en-us/articles/203068914-What-Are-the-Differences-Between-the-Free-and-Flex-Plans- And without custom domains you cannot send emails to anyone, only to people in the 5 manually whitelisted list, thus making this worthless. Also, gmail is not able to verify the DNS of the sandbox emails, and they go to spam.Mailgun does feel good otherwise if you are willing to pay. Their Heroku integration feels great, exposes everything you need on environment variables straight away.
- CloudMailin: does not feel as well developed as Mailgun. More focus on receiving. Tried adding TXT xxx._domainkey.ourbigbook.com and CNAME mta.ourbigbook.com entires with custom domain to see if it works, took forever to find that page... https://www.cloudmailin.com/outbound/domains/xxx Domain verification requires a bit of human contact via email.They also don't document their Heroku usage well. The envvars generated on Heroku are useless, only to login on their web UI. The send username and password must be obtained on their confusing web ui.
- Sendgrid: OK, this one is the first one I got working on free tier. Saw the email on gmail!!! Just verified automatically after adding like 5 DNS records, but everything just worked. Microsoft Outlook did put it into junk though, but I had a more or less random test message, maybe it was their stupid AI? Yahoo also worked fine. 100 emails a day is not insane, but it is forever, I'm happy with that.
"automatic programming has always been a euphemism for programming in a higher-level language than was then available to the programmer" sums it up.
The ultimate high level is of course to program with: "computer, make money", which is the goal of artificial general intelligence.
Reproducible builds allow anyone to verify that a binary large object contains what it claims to contain!
Many plotting software can be used to create mathematics illustrations. They just tend to have more data-oriented rather than explanatory-oriented output.
Some notable ones:
Ciro Santilli has some good related articles listed under: the best articles by Ciro Santilli.
Good library to render text in OpenGL, see also: https://stackoverflow.com/questions/8847899/opengl-how-to-draw-text-using-only-opengl-methods/36065835#36065835
The fact that they kept the standard open source makes them huge heroes, see also: closed standard.
Good modern OpenGL tutorial in retained mode with shaders, see also: https://stackoverflow.com/questions/6733934/what-does-immediate-mode-mean-in-opengl/36166310#36166310
Examples at: two-js/.
JavaScript library, works both on browser and headless with node.js to SVG.
Feels good. Maybe not ultra featured, and could have more simple examples in docs, but still good.
One of the main features of Two.js appears to be the fact that it can natively render to either SVG and canvas, rather than creating SVG through DOM hacks as done by other projects.
One specific software project, typically with a single executable file format entry point.
As mentioned at Section "Computer security researcher", Ciro Santilli really tends to like people from this area.
Also, the type of programming Ciro used to do, systems programming, is particularly useful to security researchers, e.g. Linux Kernel Module Cheat.
The reason he does not go into this is that Ciro would rather fight against the more eternal laws of physics rather than with some typo some dude at Apple did last week and which will be patched in a month.
Ciro Santilli found out that he likes computer security researchers and vice versa.
It's a bit the same reason why he likes physicists: you can't bullshit with security.
You can't just talk nice and hope for people to belive you.
You can't not try to break things and just keep everyone happy in their false illusion of safety.
You can't do a half job.
If you do any of that, you will get your ass handed to you in a little gift bag.
All of this is closely linked to Ciro Santilli's self perceived creative personality and being naughty and creative are correlated.
A superstar security researcher with some major exploits from in the 2000's.
Oh yeah, that felt good. A few months before he died.
Ermm, as of February 2021, I was able to update my 2FA app token with the password alone, it did not ask for the old 2FA.
So what's the fucking point of 2FA then? An attacker with my password would be able to login by doing that!
Is it that Google trusts that particular action because I used the same phone/known IP or something like that?
- https://youtu.be/IH0GXWQDk0Q?t=900 mentions that Alfred Charles Hobbs commented in 1853:
Rogues are very keen in their profession, and know already much more than we can teach them
Basically the opposite of security through obscurity, though slightly more focused on cryptography.
This is really good.
It allows the client to prepare a single request that gets all the data it wants to fill up a given webpage, rather than doing several separate requests.
So it only gets exactly what it needs, and in a single request.
Very sweet. This is the future of the web.
tmux for newbs.
This means that e.g. if you do an
UPDATE query on multiple rows, and power goes out half way, either all update, or none update.This is different from isolation, which considers instead what can or cannot happen when multiple queries are running in parallel.
Determines what can or cannot happen when multiple queries are running in parallel.
See Section "SQL transaction isolation level" for the most common context under which this is discussed: SQL.
A software that implements some database system, e.g. PostgreSQL or MySQL are two (widely extended) SQL implementations.
List databases:
echo 'show dbs' | mongoDelete database:
or:
use mydb
db.dropDatabase()echo 'db.dropDatabase()' | mongo mydbView collections within a database:
echo 'db.getCollectionNames()' | mongo mydbShow all data from one of the collections: https://stackoverflow.com/questions/24985684/mongodb-show-all-contents-from-all-collections
echo 'db.collectionName.find()' | mongo mydbTested as of Ubuntu 20.04, there is no Mongo package available by default due to their change to Server Side Public License, which Debian opposed. Therefore, you have to add their custom PPA as mentioned at: https://docs.mongodb.com/manual/tutorial/install-mongodb-on-ubuntu/
Per language:
How to decide if an ORM is decent? Just try to replicate every SQL query from nodejs/sequelize/raw/many_to_many.js on PostgreSQL and SQLite.
There is only a very finite number of possible reasonable queries on a two table many to many relationship with a join table. A decent ORM has to be able to do them all.
If it can do all those queries, then the ORM can actually do a good subset of SQL and is decent. If not, it can't, and this will make you suffer. E.g. Sequelize v5 is such an ORM that makes you suffer.
The next thing to check are transactions.
Basically, all of those come up if you try to implement a blog hello world world such as gothinkster/realworld correctly, i.e. without unnecessary inefficiencies due to your ORM on top of underlying SQL, and dealing with concurrency.
Ciro Santilli used to use file managers in the past.
But he finally converted to a shell
cd aliases that auto-ls: https://github.com/cirosantilli/dotfiles/blob/a51bcc324f0cff0eddd4c3bb8654ec223a0adb7b/home/.bashrc#L1058The most powerful GUI file manager ever?? Infinite configurability??
Ciro Santilli wasted some time on it before he gave up on file managers altogether.
Ciro Santilli considered it before he stopped using file managers altogether, it is not bad.
A library to make games.
Ciro Santilli considered this as the basis for ciro's 2D reinforcement learning games, but ultimately decided it was a bit too messy. Nice overall though.
Their project lead as of 2018 was pro-CCP: https://github.com/cirosantilli/china-dictatorship/blob/aa1176c57fc2929465294e520b43b50d44e202ba/communities-that-censor-politics.md
Originally by Keyhole Inc., which the nbecame Google Maps, but the format seems standardized and has non-Google support, so should be OK.
Owned/developed by Google as of 2020.
Early on jumpstarted from several acquisitions, notably Keyhole Inc..
Street View's go into the past mode is the dream of every archaeologist. Ciro can only dream of a magic street view that allows going back to earlier centuries and beyond... isn't it amazing to think that people in the future will have that ability to time travel back to around the year 2006? Ciro wonders how long Google will be able to keep storing data like that.
Thanks, CIA.
It is rare to find a project with such a ridiculously high importance over funding ratio.
E.g., as of 2020, their help login https://help.openstreetmap.org/ shows MyOpenID as an option, which was discontinued in 2014, and not Google OAuth.
They do still seem to have a bit more activity than https://gis.stackexchange.com/questions/tagged/openstreetmap on Stack Exchange.
Complaints:
- Transliteration is off by default!...... https://wiki.openstreetmap.org/wiki/Translation You just have to learn all scripts ever. Good luck with the Chinese characters. Genius.
- In order to see information about places, you have to click "Query features" on the toolbar first. Who made such a terrible UI? Direct click is a much, and so easy to implement?
- It is impossible to discern different types of paths and other walking path symbols, the symbols are too small, and just scale down to a line no matter how much you zoom in.
- Power lines are way too visible. While that is kind of cool, it is useless and distracting to most people most of the time.
- No street-level imagery...: https://help.openstreetmap.org/questions/1178/adding-photos
- No aerial imagery: https://help.openstreetmap.org/questions/6849/how-can-i-see-the-aerial-imagery-without-editing-the-map But that is kind of understandable, as that one might not be free.
- No restaurant ratings: https://help.openstreetmap.org/questions/64852/ratings-for-pois because it is "Subjective". OMG those people, such a huge value powerhouse wasted.Not just for restaurants, but for other things as well, e.g. sharing of good cycle circuits.
All of this is a shame, because they do have some incredible data that you cannot find easily on other maps because people just edited it up.
Kind of works! Notably, has the amazing cycling database offline for you, if you fall within the 6 area downloads. It is worth supporting these people beyond the 6 free downloads however.
Has some of the best map data available for the United Kingdom, but their data appears to be proprietary?
IDEs are absolutely essential for developing complex software.
The funny thing is that you don't notice this until someone shows it to you. But once you see it, there is not turning back, just like Steve Jobs customers don't know what they want quote.
Unfortunately, after the Fall of Eclipse (archive), the IDE landscape in 2019 is horrible and split between:
Programmers of the world: unite! Focus on one IDE, and make it work for all languages and all build systems. Give it all the features that Eclipse has, but none of the bugginess. Work with top project to make sure the IDE works for all top projects.
Projects of the world: support one IDE, with in-tree configuration. Complex integration is often required between the IDE and the build system, and successful projects must to that once for all developers. Either do this, or watch you complex project wither away.
Build tool maintainers: make it possible for IDEs to support your tool! E.g., implement JSON Compilation Database output so that IDEs can read the exact compiler commands from that, in order to automatically determine how files should be parsed! Or better, just use libllvm in your IDE itself as the main parser.
Ciro is evaluating some IDEs at: https://github.com/cirosantilli/ide-test-projects
Before we get a decent open source integrated development environment, what else can you do?
But also perfect for small one-off files when you don't have the patience to setup said IDE.
vim's defaults are atrocious for the 21st century! Vundle is reasonable as an ad-hoc package manager, but it can't set fixed versions of packages:
Vimscript unit testing!!!
Ciro Santilli contributed a bit to this, and was even given push rights, see also: see also: Ciro Santilli's minor projects.
There is one major annoyance: you can't use ESC to leave the address bar focus, but using Tab as a workaround works:
FFmpeg is the assembler of audio and video.
As a result, Ciro Santilli who likes "lower level stuff", has had many many hours if image manipulation fun with this software, see e.g.:
- the "Media" section of the best articles by Ciro Santilli.
- Figure "Ciro knows how to convert videos to GIFs."
As older Ciro grows, the more he notices that FFmpeg can do basically any lower level audio video task. It is just an amazing piece of software, the immediate go-to for any low level operation.
FFmpeg was created by Fabrice Bellard, which Ciro deeply respects.
Resize a video: https://superuser.com/questions/624563/how-to-resize-a-video-to-make-it-smaller-with-ffmpeg:
Unlike every other convention under the sun, the height in
ffmpeg -i input.avi -filter:v scale=720:-1 -c:a copy output.mkvscale is the first number.FFmpeg is likely the backend of YouTube through reverse engineering: https://streaminglearningcenter.com/blogs/youtube-uses-ffmpeg-for-encoding.html (archive)
Crop
20 pixels from the bottom of the image:
convert image.png -gravity East -chop 20x0 result.pngWhat happens when the underdogs get together and try to factor out their efforts to beat some evil dominant power, sometimes victoriously.
Or when startups use the cheapest stuff available and randomly become the next big thing, and decide to keep maintaining the open stuff to get features for free from other companies, or because they are forced by the Holy GPL.
Open source frees employees. When you change jobs, a large part of the specific knowledge you acquired about closed source a project with your blood and tears goes to the trash. When companies get bought, projects get shut down, and closed source code goes to the trash. What sane non desperate person would sell their life energy into such closed source projects that could die at any moment? Working on open source is the single most important non money perk a company can have to attract the best employees.
Open source is worth more than the mere pragmatic financial value of not having to pay for software or the ability to freely add new features.
Its greatest value is perhaps the fact that it allows people study it, to appreciate the beauty of the code, and feel empowered by being able to add the features that they want.
That is why Ciro Santilli thought:
Life is too short for closed source.
But quoting Ciro's colleague S.:
Every software is open source when you read assembly code.
While software is the most developed open source technology available in the 2010's, due to the "zero cost" of copying it over the Internet, Ciro also believes that the world would benefit enormously from open source knowledge in all areas on science and engineering, for the same reasons as open source.
A more precise term for those in the know: open source software that also has a liberal license, for some definition of liberal.
Ciro Santilli defines liberal as: "can be commercialized without paying anything back" (but possibly subject to other restrictions).
He therefore does not consider Creative Commons licenses with NC to be FOSS.
For the newbs, the term open source software is good enough, since most open source software is also FOSS.
But when it's not, it's crucial to know.
This model can work well when there is a set of commonly used libraries that some developers often use together, but such that there isn't enough maintenance work for each one individually.
So what people do is to create a group that maintains all those projects, to try and get enough money to survive from the contributions done primarily for each one individually.
Examples:
Ciro Santilli's raison d'etre, one of his attempts: OurBigBook.com.
The outcome of closed knowledge is reverse engineering.
Projects:
- MIT OpenCourseWare
- several e-learning websites, e.g. OpenStax
Not everything is perfect.
One big problem of many big open source projects is that they are contributed to by separate selfish organizations, that have private information. Then what happens is that:
- people implement the same thing twice, or one change makes the other completely unmergeable
- you get bugs but can't share your closed source test cases, and then you can't automate tests for them, or clearly demonstrate the problem
- other contributors don't see your full semi secret important motivation, and may either nitpick too much or take too long to review your stuff
Another common difficulty is that open source maintainers may simply not care enough about their own project (maybe they did in the past but lost interest) to review external patches by people they don't know.
This is understandable: a new patch, is a new risk of things breaking.
Therefore, if you ever submit patches and they get ignore, don't be too sad. It just comes down to a question of maintenance cost, and means that you will waste some extra time on the next rebase. You just have to decide your goals and be cold about it:
- are you doing the right thing and going for a specific goal backward design? Then just fork, run as fast as possible towards a minimum viable product, and if you start to feel that rebase is costing you a lot, or feel you could get some open source fame for cheap, open reviews and see what upstream says. If they ignore you, politely tell yourself in your mind silently "fuck them", and carry on with the MVP
- otherwise, e.g. you just want to randomly help out, you have to ask them before doing anything big "how can I be of help". If I propose a patch for this issue, do you promise to review it?
Writing documentation in an open source project in which you don't have immediate push rights is another major pain due to code reviews. Code code reviews tend to be much less subjective, because if you do something wrong, stuff crashes, runs slower, or you need more lines of code to reach the same goal. There are tradeoffs, but in a limited number. Documentation code reviews on the other hand, are an open invitation to infinite bike-shedding, since you can't "run" documentation through a standardized brain model. Much better is for one good documenter person to just make one cohesive Stack Overflow post, and ping others with more knowledge to review details or add any missing pieces :-)
Open source development model in which developers develop in private, and only release code to the public during releases.
Notable example project: Android Open Source Project.
This development model basically makes reporting bugs and sending patches a waste of time, because many of them will already have been solved, which is why this development model is evil.
Ciro Santilli can accept closed source on server products more easily than offline, because the servers have to be paid for somehow (by stealing your private data).
Closed source on offline products used by millions of people is evil, when you could just have those for free with open source software! Thus Ciro's hatred for Microsoft Windows and MacOS (at least userland, maybe).
The opposite of open source software.
How the hell are you supposed to develop an open source implementation of something that has a closed standard?
Not to mention open source test suites, that would be way too much to ask for, those always end up being made by some shady small companies that go bankrupt from time to time, see e.g. .
If you are going to do closed source, at least do it like this.
Basically the opposite of need to know for software.
These people are heroes. There's nothing else to say.
This is the dream cheating software every student should know about.
It also has serious applications obviously. https://www.sympy.org/scipy-2017-codegen-tutorial/ mentions code generation capabilities, which sounds super cool!
The code in this section was tested on
sympy==1.8 and Python 3.9.5.Let's start with some basics. fractions:
outputs:
Note that this is an exact value, it does not get converted to floating-point numbers where precision could be lost!
from sympy import *
sympify(2)/3 + sympify(1)/27/6We can also do everything with symbols:
outputs:
We can now evaluate that expression object at any time:
outputs:
from sympy import *
x, y = symbols('x y')
expr = x/3 + y/2
print(expr)x/3 + y/2expr.subs({x: 1, y: 2})4/3How about a square root?
outputs:
so we understand that the value was kept without simplification. And of course:
outputs
outputs:
gives:
x = sqrt(2)
print(x)sqrt(2)sqrt(2)**22. Also:
sqrt(-1)II is the imaginary unit. We can use that symbol directly as well, e.g.:
I*I-1Let's do some trigonometry:
gives:
and:
gives:
The exponential also works:
gives;
cos(pi)-1cos(pi/4)sqrt(2)/2exp(I*pi)-1Now for some calculus. To find the derivative of the natural logarithm:
outputs:
Just read that. One over x. Beauty.
from sympy import *
x = symbols('x')
diff(ln(x), x)1/xLet's do some more. Let's solve a simple differential equation:
Doing:
outputs:
which means:
To be fair though, it can't do anything crazy, it likely just goes over known patterns that it has solvers for, e.g. if we change it to:
it just blows up:
Sad.
y''(t) - 2y'(t) + y(t) = sin(t)from sympy import *
x = symbols('x')
f, g = symbols('f g', cls=Function)
diffeq = Eq(f(x).diff(x, x) - 2*f(x).diff(x) + f(x), sin(x)**4)
print(dsolve(diffeq, f(x)))Eq(f(x), (C1 + C2*x)*exp(x) + cos(x)/2)diffeq = Eq(f(x).diff(x, x)**2 + f(x), 0)NotImplementedError: solve: Cannot solve f(x) + Derivative(f(x), (x, 2))**2Let's try some polynomial equations:
which outputs:
which is a not amazingly nice version of the quadratic formula. Let's evaluate with some specific constants after the fact:
which outputs
Let's see if it handles the quartic equation:
Something comes out. It takes up the entire terimnal. Naughty. And now let's try to mess with it:
and this time it spits out something more magic:
Oh well.
from sympy import *
x, a, b, c = symbols('x a b c d e f')
eq = Eq(a*x**2 + b*x + c, 0)
sol = solveset(eq, x)
print(sol)FiniteSet(-b/(2*a) - sqrt(-4*a*c + b**2)/(2*a), -b/(2*a) + sqrt(-4*a*c + b**2)/(2*a))sol.subs({a: 1, b: 2, c: 3})FiniteSet(-1 + sqrt(2)*I, -1 - sqrt(2)*I)x, a, b, c, d, e, f = symbols('x a b c d e f')
eq = Eq(e*x**4 + d*x**3 + c*x**2 + b*x + a, 0)
solveset(eq, x)x, a, b, c, d, e, f = symbols('x a b c d e f')
eq = Eq(f*x**5 + e*x**4 + d*x**3 + c*x**2 + b*x + a, 0)
solveset(eq, x)ConditionSet(x, Eq(a + b*x + c*x**2 + d*x**3 + e*x**4 + f*x**5, 0), Complexes)Let's try some linear algebra.
Let's invert it:
outputs:
m = Matrix([[1, 2], [3, 4]])m**-1Matrix([
[ -2, 1],
[3/2, -1/2]])Huge respect to this companies.
By Ciro Santilli.
It does a huge percentage of what you want easily, and from the language that you want to use.
Couldn't handle exploration of large datasets though: Survey of open source interactive plotting software with a 10 million point scatter plot benchmark by Ciro Santilli
Examples:
- matplotlib/hello.py
- matplotlib/educational2d.py
- matplotlib/axis.py
- matplotlib/label.py
- Line style
- Subplots
- matplotlib/two_lines.py
- Data from files
- Specialized
Tends to be Ciro Santilli's first attempt for quick and dirty graphing: https://github.com/cirosantilli/gnuplot-cheat.
domain-specific language. When it get the jobs done, it is in 3 lines and it feels great.
When it doesn't, you Google for an hours, and then you give up in frustration, and fall back to Matplotlib.
Couldn't handle exploration of large datasets though: Survey of open source interactive plotting software with a 10 million point scatter plot benchmark by Ciro Santilli
A glitch is more precisely a software bug that is hard to reproduce. But it has also been used to mean a software bug that is not very serious.
Related:
One of the Holiest age old debugging techniques!
Git has some helpers to help you achieve bisection Nirvana: https://stackoverflow.com/questions/4713088/how-to-use-git-bisect/22592593#22592593
Obviously not restricted to software engineering alone, and used in all areas of engineering, e.g. Video "Air-tight vs. Vacuum-tight by AlphaPhoenix (2020)" uses it in vacuum engineering.
The cool thing about bisection is that it is a brainless process: unlike when using a debugger, you don't have to understand anything about the system, and it incredibly narrows down the problem cause for you. Not having to think is great!
Just add GDB Dashboard, and you're good to go.
Nirvana!!!
The best open source implementation as of 2020 seems to be: Mozilla rr.
- https://stackoverflow.com/questions/1206872/go-to-previous-line-in-gdb/46996380#46996380
- https://stackoverflow.com/questions/1470434/how-does-reverse-debugging-work/53063242#53063242
- https://stackoverflow.com/questions/3649468/setting-breakpoint-in-gdb-where-the-function-returns/46116927#46116927
- https://stackoverflow.com/questions/27770896/how-to-debug-a-rare-deadlock/50073993#50073993
- https://stackoverflow.com/questions/522619/how-to-do-bidirectional-or-reverse-debugging-of-programs/50074106#50074106 link only, marked as duplicate of go to previous line
- https://softwareengineering.stackexchange.com/questions/181527/why-is-reverse-debugging-rarely-used
GDB Nirvana?
The musical study of software engineering.
Ciro Santilli is obsessed by those in order to learn any new concept, not just for bug reporting.
This includes to learn more theoretical subjects like physics and mathematics.
Please, use AsciiDoc and one page to rule them all.
The mandatory xkcd: xkcd 927: Standards.
Of course, "Ciro Santilli" with quotes, since all of those are either taken directly from others, or had been previously formulated by others.
Some anecdotes.
Ciro Santilli never splits up functions unless there is more than one calling point. If you split early, the chances that the interface will be wrong are huge, and a much larger refactoring follows.
If you just want to separate variables, just use a scope e.g.:
int cross_block_var;
// First step.
{
int myvar;
}
// Second step.
{
int myvar;
}Ciro has seen and had to deal with in his lifetime with two projects that had like 3 to 10 git separate Git repositories, all created and maintained by the same small group of developers of the same organization, even though one could not build without the other. Keeping everything in sync was Hell! Why not just have three directories inside a single repository with a single source of truth?
Another important case: Linux should have at least a C standard library, init system, and shell in-tree, like BSD Operating Systems, as mentioned at: Section "Linux".
A slow development test cycle will kill your software.
New developers won't want to learn your project, because they would rather shoot themselves.
This means that build time, and the time to run tests, must be short.
5 seconds to rebuild is the maximum upper limit.
Of course, at some point software gets large enough that things won't fit anymore in 5 seconds. But then you must have either some kind of build caching, or options to do partial builds/tests that will bring things down to that 5 second mark.
You also have to spend some time profiling execution and build from scratch times.
A slow build from scratch will mean that your continuous integration costs a lot, money that could be invested in a new developer!
It also means that people won't bother to reproduce bugs on given commits, or bisect stuff.
One anecdote comes to mind. Ciro Santilli was trying to debug something, and more experience colleague came over.
To reproduce a problem, ciro was running one command, wait 5 seconds, run a second command, wait 5 seconds, run a third command:
cmd1
# wait 5 seconds
cmd2
# wait 5 seconds
cmd3The first thing the colleague said: join those three commands into one:
And so, Ciro was enlightened.
cmd1;cmd2;cmd3Whenever someone asks:
I can only see this one thing different our setups, do you think it could be the cause of our different behaviour?you don't need to read anymore, just point them to this page immediately. Virtualization for the win.
Sometimes you are really certain that something is a required substep for another thing that is coming right afterwards.
When things are this concrete, fine, just do the substep.
But you have to always beware of cases where "I'm sure this will be needed at some unspecified point in the future", because such points tends to never happen.
YAGNI is so fundamental, there are several closely related concepts to it:
The software engineer phrasing of simplicity is the ultimate sophistication.
Like all other principles, it is not absolute.
But it is something that you should always have on the back of your mind.
you aren't gonna need it is closely related, as generally the extra unnecessary complications are set in place to accommodate useless features that will never be needed.
The trivial takes a few hours.
The easy takes a week.
And what seemed hard takes a few hours.
As "deadlines" approach, feature sets get cut down, then there are delays, and finally a feasible feature set is delivered some time after the deadline.
The only deadlines that can be met are those of tasks which have already been done but not announced.
This is of course Hofstadter's law.
On the other hand, it is also known that the time it takes for a task to be done expands without limits to match the deadline. And therefore, without deadlines, tasks will take forever and never get done.
And so, in a moment, perceiving this paradox, Ciro was enlightened.
Once upon a time, when Ciro Santilli had a job, he had a programming problem.
A senior developer came over, and rather than trying to run and modify the code like an idiot, which is what Ciro Santilli usually does (see also experimentalism remarks at Section "Ciro Santilli's bad old event memory"), he just stared at the code for about 10 minutes.
We knew that the problem was likely in a particular function, but it was really hard to see why things were going wrong.
After the 10 minutes of examining every line in minute detail, he said:
I think this function call has such or such weird edge caseand truly, that was the cause.
And so, Ciro was enlightened.
Working remotely is hard if you don't already highly master the software and enterprise systems used.
Also you don't feel people's love as strongly, and usefulness is built on love, see also Steve Jobs's Pixar office space design philosophy.
But please, give workers a small silent office so that we can concentrate instead of a silly open space, and create an internal social network so people can see what others are doing.
Remote working is much better if the majority of the team also does it, otherwise you will get excluded. Maybe after VR...
When debugging complex software, make sure to keep notes of every interesting find you make in a note file, as you extract it from the integrated development environment or debugger.
Especially if your memory sucks like Ciro's.
This is incredibly helpful in fully understanding and then solving complex bugs.
The most important program ever written!!!
Other programs that can be considered "hello worlds" in different contexts:
- web development
- video game
- Doom is the hello world shooter game
Poet warriors monkeys? Or Code peasants (码农) according to the Chinese.
Ciro Santilli claims to be one of them.
Much like a pianist plays his piano, a software engineer plays his computer.
Ciro Santilli believes that there is a positive correlation between being a software engineer and liking Buddhist-like things.
Maybe it is linked to minimalism and DRY, which software engineers value so greatly.
Even Ciro had to try an unoriginal Buddhist joke intro in one of this Stack Overflow answers.
Ciro also feels that his "minimal reproducible example" scientific language/concept learning method obsession of breaking things into tiny sub-problems has a strong link with Koans.
Other programmers are equally obsessed by koans:
- http://www.catb.org/~esr/writings/unix-koans/ "The Unix Koans of Master Foo - Rootless Root (无根的根)" by the legendary Eric Steven Raymond is notable
- http://thecodelesscode.com/ "The Codeless Code" by anonymous Qi.
- http://canonical.org/~kragen/tao-of-programming.html
- https://wiki.c2.com/?MysticalProgrammingKoans
- http://rubykoans.com/ even evil programming languages adopt them!
Another thing that points the correlation out is the existence of https://wattsalan.github.io/ on a
github.io about Alan Watts.Aaron, Ciro Santilli will complete your quest to make eduction free. Just legally this time, with the and with the Creative Commons license you helped to create.
Ciro likes how the Internet's Own Boy (2014) explains how Aaron felt like high school was bullshit, and that he could learn whatever he wanted from books, which is one of Ciro's key feelings.
It also mentions how he was a natural teacher from a very early age.
Hmmm, he does not know how to spell guerilla? sic? https://www.quora.com/What-is-the-correct-spelling-guerilla-or-guerrilla
Note to self: if you are going to commit a crime, don't publish your plans online.
Ross Ulbricht's diaries come to mind.
That's how Russian shadow library maintainers do it, they know how to crime good old Russians. Maybe there is a good thing about having dictatorships in the world that give zero fucks about American copyright laws. There will always be some random Russian academic who will implement this and not go to jail. Maybe it's even state sponsored.
This resonates a lot with Ciro Santilli's ideas!
Lots of similar ideologies to Ciro Santilli, love it:
- https://sandymaguire.me/about/:
- he's an idealist
I might best be described somewhere between independent researcher and voluntarily-unemployed bum. At the ripe old age of 27 I decided to quit my highly-lucrative engineering job and decide to focus more on living than on grinding for the man. It's what you might call a work in progress.
- https://sandymaguire.me/blog/reaching-climbing/: don't be a pussy
Last Friday was my final day at work. According to my facebook profile, I am now "happily retired." As of today, I don't plan to do another day of "traditional work" in my life. That's not to say that I'll be sitting idle playing tiddly winks. I want to build things, to dedicate my life to independent study, and to get really, really good with building communities. I don't have time for any of this "work" stuff that somehow pervades our entire culture, choking our inspiration and sapping our energy away from the things we'd rather be doing.
One is also reminded of Gwern Branwen. Sandy is also into self-improvement stuff, so even more like Gwern. This is a point Ciro diverges on. Ciro works actively on self-worsening. - he thinks university is useless:
- https://sandymaguire.me/blog/where-uni-fails/ Where University Fails (2018), mostly talking about backward design
- https://sandymaguire.me/blog/gatekept/ rejected from Imperial College PhD program due to grades being slightly too low for their stupid requirements, even though he had a referral already, and an amazing CV
- he likes jazz: https://sandymaguire.me/blog/too-smart/
Other interesting points:
- https://sandymaguire.me/blog/sandy-runback/ he changed his own name to Sandy because he didn't like it, he was born Alexander
- https://algebradriven.design/ closed source books though, ouch. At least they seem to have been made with leanpub though, could be worse.
He's a Haskell person.
His website is down as of 2020, shame: https://wiki.dandascalescu.com/essays/english-universal-language
A LessWrong person.
One thing that annoys Ciro Santilli about that website are the footnote overload. Ciro likes linear things.
TODO find the best source for the amazing "I have done your mother" quote.
Programming is hard. To Ciro Santilli, it's almost masochistic.
What makes Ciro especially mad when programming is not the hard things.
It is the things that should be easy, but aren't, and which take up a lot of your programming time.
Especially when you are already a few levels of "simple problems" down from your original goal, and another one of them shows up.
This is basically the cause of Hofstadter's law.
But of course, it is because it is hard that it feels amazing when you achieve your goal.
Putting a complex and useful program together is like composing a symphony, or reaching the summit of a hard rock climbing proble.
This script tests all executables under a selected directory.
Ciro Santilli has been writing scripts of that type for a long time in order to test his programming self-learning setups with asserts.
The most advanced of those being the test system of Linux Kernel Module Cheat.
But had too much stuff that would be specific to that project, so Ciro decided to start this new one in Node.js, hopefully it will also be the last he ever writes.
A sample usage of the test library can be seen at: nodejs/sequelize/test.
This is a good approach. The downside is that while you are developing the implementation and testing interactively you might notice that the requirements are wrong, and then the tests have to change.
One intermediate approach Ciro Santilli likes is to do the implementation and be happy with interactive usage, then create the test, make it pass, then remove the code that would make it pass, and see it fail. This does have a risk that you will forget to test something, but Ciro finds it is a worth it generally. Unless it really is one of those features that you are unable to develop without an automated test, generally more "logical/mathematical" stuff. This is a sort of laziness Driven Development.
Some blogs:
- https://blog.codinghorror.com/the-best-code-is-no-code-at-all/ The Best Code is No Code At All (2007)
- http://www.skrenta.com/2007/05/code_is_our_enemy.html Code is our enemy (2007)
Also resonates with backward design.
Terminals don't really matter. Just use tmux.
If session autosave was finally mainlined, this would be Nirvana.
It is said, that once upon a time, programmers used CSV and collaborated on SourceForge, and that everyone was happy.
These days, are however, long gone in the mists of time as of 2020, and beyond Ciro Santilli's programming birth.
Perfect Git integration belongs in integrated development environments :-)
This is good. But it misses some key operations, so much so that makes Ciro not want to learn/use it daily.
This is where Ciro Santilli stored his code since he started coding nonstop in 2013.
He does not like the closed source aspect of it, but hey, there are more important things to worry about, the network effect is just too strong.
The cheapest and most resilient way to publish text content humanity has achieved so far.
GitLab was very important to Ciro because he wanted to base Booktree on it.
See also: Ciro Santilli's minor projects.