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Back-of-envelope calculations: 33 years, 48 weeks of 5 days, that makes roughly 8000 days.
You are responsible for 10-12 million lines, most of which you created originally, you say. Let's say 8 of those 10 million lines.
So every working day for 33 years, you have produced about a thousand new code lines, going into you employer's repository. Wow!
I know for certain that I have never been even close to that, delivering 5000 lines of new production code to the code repository every single week for 33 years! I could never get close to that. I suspect that few others will.
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There is some duplication in the code base coming from forks for new products or new generations of existing products. Over time there is drift between the forks which means tracking the differences. There have been times when I've applied bug fixes in 6 or more places.
Still, I am pretty productive. Some days I can write 2,000 lines without breaking a sweat. Other days I only get 5 lines, and 2 of them are dodgy  .
Software Zen: delete this;
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For a small business with only a few custom apps, would say 3 to 6 months to become competent with the code. It depends a lot on how the code was written and how well the code matches the skill set of the coder.
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A developer will be responsible for all code he writes.
Add in a ‘helper’ and you’ll get a bungled mess, because the added person will never fully understand the context and code: the primary developer will have to split their time between coding and teaching/fixing.
 Hard truth: the person responsible for breaking it is responsible for fixing it.
Time is the differentiation of eternity devised by man to measure the passage of human events.
- Manly P. Hall
Mark
Just another cog in the wheel
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I don't think there is ever too much or too little. Although within reason.
I think we can owe Dave Cutler many thanks for the Windows NT kernel and whatever else goes with connecting that to Foundation Classes. Torvalds for Linux, Stallman for GCC and EMACS (many nameless heroes for creating or porting to GNU). Of note, I think Tim Sweeney loves to reinvent Unreal Engine every 10 years or so.
But I guess if you own it and love the project, Sky's the limit.
Ken Thompson...that guy's a machine (I mean B, UNIX, Plan 9, Inferno, UTF-8, Go) and I think he once reverse engineered (hacked) one of the predecessors of the Inkjet printer.
Yes, they all weren't alone but I'm pretty sure they were compiling most of the source code in their head.
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Unless you're prepared to spend time "reverse engineering" and creating "structure charts", you'll never have the big picture and will create more bugs as you try and fix exisitng ones; or make enhancements.
How big is big? There are departments and enterprises. A few days to a few months to "figure it all out".
As a "project manager / lead" and "single person", you get to do it, and "own" it all.
"Before entering on an understanding, I have meditated for a long time, and have foreseen what might happen. It is not genius which reveals to me suddenly, secretly, what I have to say or to do in a circumstance unexpected by other people; it is reflection, it is meditation." - Napoleon I
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How much code can a coder be assigned to be in charge with
As much as they can handle and then some.
The only real answer is "it depends", but I don't think you can ever say a developer can only be in charge of X amount of code. The dev should be in charge of all the code that their job requires them to be, which is based on business case / security / level of responsibility. If there's simply too much then the load needs to be shared based on who else the business can afford to hire. And in some cases devs are simply in charge of everything, and in charge of too much. That's just life.
cheers
Chris Maunder
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I think I may have found a use for it I can get behind.
code generation synthesis
Code synthesis is similar to traditional code generation in that it creates code given some input.
The dramatic difference is the output. Code synthesis looks like the code was written by hand. Typically code generation looks very regular, and you can tell it was done by a machine (or a very methodical and painfully boring person maybe)
This is maybe most evident in parsing code. Generated recursive descent parsers use FOLLOWS sets whereas hand written parsers are typically and for lack of a better term more "passive" in that they don't care what symbol follows the symbol they are currently parsing. They don't rely on lookahead as much. It's hard to explain this but easy to see it if you compare say a hand rolled JSON parser with a machine generated LL(1) based JSON parser.
The trouble is, I have no way to do code synthesis outside maybe some very narrow cases, but I'd like a more general approach - something I can train to produce code to solve any number of different problems.
I'm thinking AI might be the ticket. I know nothing about it though, as AI is big tech and I'm all about small tech.
If anyone reads the above, can understand what I mean, and has even some sort of baseline experience with this "AI" stuff, please tell me what you know. I don't even know if it's realistic or where to start looking. Anything at this point, penny for your thoughts!
Thanks folks.
Check out my IoT graphics library here:
https://honeythecodewitch.com/gfx
And my IoT UI/User Experience library here:
https://honeythecodewitch.com/uix
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You need to start somewhere: i.e. "primitives". AI won't create primitives (chicken and egg). Once you have the primitives, then you (or "AI") can start thinking about assembling them in different ways.
"Before entering on an understanding, I have meditated for a long time, and have foreseen what might happen. It is not genius which reveals to me suddenly, secretly, what I have to say or to do in a circumstance unexpected by other people; it is reflection, it is meditation." - Napoleon I
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I need to determine what a model would look like for some kind of code synthesis and then grow it from there, even if it was one for a particular type of code generation, but I don't where to start.
When you say primitives, do you mean like programming primitives, like intrinsic types and such? Or do you mean some sort of "AI" concept I'm not familiar with yet?
Check out my IoT graphics library here:
https://honeythecodewitch.com/gfx
And my IoT UI/User Experience library here:
https://honeythecodewitch.com/uix
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Primitives are what "comes before". And it depends on your model. If you want to "generate constellations", then you need stars. "Generative AI" is where you tell it to write stuff; or draw stuff. You need to find your stuff.
"Before entering on an understanding, I have meditated for a long time, and have foreseen what might happen. It is not genius which reveals to me suddenly, secretly, what I have to say or to do in a circumstance unexpected by other people; it is reflection, it is meditation." - Napoleon I
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My code works in my initial tests, but as soon as I try to run it in the real world, boom. Nothing happens. Not even any errors, just ... nothing.
I spent a week and a half building it and getting it to run through my initial tests successfully.
For me that's a long time to spend on code. I spent a week on Winduino, which is fairly substantial.
I can't figure out why it's not working, and yet outside my offending code there's a lot going on in the real world case so it's hard to narrow down where the problem might be coming from.
Also debugging is only helpful to a point because of the way of the my rasterization works - you get lost even following routine by routine. There are qsorts, edge detection, poly fills, allocations, deallocations, etc so it's hard to know what it's doing with the data I'm passing it. Unfortunately it can only be so factored and still be performant.
I'm frustrated with it, and done for now, but I wish I wasn't because it's 3am and I'm wide awake.
I may have to start over.
Check out my IoT graphics library here:
https://honeythecodewitch.com/gfx
And my IoT UI/User Experience library here:
https://honeythecodewitch.com/uix
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hmmm nothing.
Is is spinning with high CPU usage (or high memory usage), or caught in a deadlock wait?
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Nope. No threading, and the thing runs, even after the fact. Everything goes except my SVGs which is what this code is about. It can still parse SVGs from a file, but if built manually the above happens. 
Check out my IoT graphics library here:
https://honeythecodewitch.com/gfx
And my IoT UI/User Experience library here:
https://honeythecodewitch.com/uix
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interesting. (frustrating but interesting).
I must confess to being an old, crusty, developer. So here goes.
Add conditional code (via macros or assembly directives that are dependent on a keyword) to define a log file.
Pick spots in you code that you absolutely know have to be executed (start with file SVGs first)
Only use a few prints to the log, you only need to prove that the code is executing the way your brain is telling you it is executing. Then switch to manual SVG test. The log file should be the same. If it is not, then this is the paradox you are looking for. You are absolutely certain that the code must be executing but it is not. You can then concentrate on figuring out why it is not. If the log is identical but the manual SVG is still misbehaving, then you must refine the granularity of the prints by inserting more until you can prove all of the code is executing and still not producing output. (obviously this is not possible, but we are looking for a paradox. A point in the code that is deviating from the norm.)
I know this is not the sexy way of using real time debuggers, but I can not tell you the number of times that I was absolutely certain a piece of code was being executed, only to find it exiting out of a loop early for a reason I forgot about.
Hope this helps a tiny bit.
Good luck.
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I haven't been using a debugger. At this point I'm so used to coding embedded that I've found it's almost quicker not to use one. So what you're suggesting is kind of what I've been doing except more.
It's a console app - see my 2ascii project I recently updated here - but I've hijacked it to test my SVG builder code.
Since it's just console I use fprintf(stderr, "foo"); to "log" 
Check out my IoT graphics library here:
https://honeythecodewitch.com/gfx
And my IoT UI/User Experience library here:
https://honeythecodewitch.com/uix
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Ok
Also, slightly off topic, I looked at the 2ascii project code you posted in the article.
It appears that on the SVG processing logic "If (bmp.begin())" returns false (because the create failed) then the code just drops through to a return 0 out of main without issuing any error message. (JPG and PNG have error messages)
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I'll take a look thanks. To be honest, I threw it together to test some things. It wasn't originally meant for an article so it's a bit sloppy.
However, I've updated the actual code with more error handling, just not the in-article code. I'll take a look and see if the bug is in my final codebase.
Thanks again.
Check out my IoT graphics library here:
https://honeythecodewitch.com/gfx
And my IoT UI/User Experience library here:
https://honeythecodewitch.com/uix
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Gary, your link regarding the AI stuff got flagged by the automod as spam, so it's pending review from one of the moderators.
That said, I saw it in email and was able to peruse the link.
First thing, I need to clarify something. I'm not looking for true intelligence like "here's what I want to generate" and then it just creates code.
I'm looking to essentially expand existing code generators to produce more natural code.
So like, I have a parser generator, Parsley: A Recursive Descent Parser Generator in C#[^] that works great, but would be better if it produced more natural parsing code.
So I'm thinking I could augment a tool like this to do code synthesis. You'd still have to feed it a Context-Free-Grammar (CFG) just like normal**
The difference is simply the generated code would be more natural. I imagine you'd have to train up a model for each generation scenario, but hopefully not for each CFG.
The stuff at the link isn't quite what I'm after.
** an example of a CFG for JSON in my XBNF (extensible BNF) format
// based on spec @ json.org
Json<start>= Object | Array;
Object= "{" [ Field { "," Field } ] "}";
Field= string ":" Value;
Array= "[" [ Value { "," Value } ] "]";
Value<collapsed>= string |
number |
Object |
Array |
Boolean |
null ;
Boolean= true|false;
number= '\-?(0|[1-9][0-9]*)(\.[0-9]+)?([Ee][\+\-]?[0-9]+)?';
string= '"([^\n"\\]|\\([btrnf"\\/]|(u[A-Fa-f]{4})))*"';
true= "true";
false= "false";
null= "null";
lbracket<collapsed>= "[";
rbracket<collapsed>= "]";
lbrace<collapsed>= "{";
rbrace<collapsed>= "}";
colon<collapsed>= ":";
comma<collapsed>= ",";
whitespace<hidden>= '[\n\r\t ]+';
Check out my IoT graphics library here:
https://honeythecodewitch.com/gfx
And my IoT UI/User Experience library here:
https://honeythecodewitch.com/uix
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You (still) have to confirm the code you're expecting to run is running, and that code that should only run once, runs only once. And what shouldn't run, didn't.
Some events will run multiple times even thought they "sound" like they should only run once; "re-initializing" things you don't want.
Or sometimes one isn't running the "latest" release.
"Before entering on an understanding, I have meditated for a long time, and have foreseen what might happen. It is not genius which reveals to me suddenly, secretly, what I have to say or to do in a circumstance unexpected by other people; it is reflection, it is meditation." - Napoleon I
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In this case I'm not doing callbacks except in the rasterizer which is battle hardened and working great for parsed-from-file SVGs as well as working with the builder in my test code, so I'm ruling that out for now to narrow my possibility matrix.
What I am doing is traversing a bunch of linked lists. Something about my data in the data structures is almost certainly wrong which means my builder code isn't doing something.
Complicating matters, much of this code comes from nanosvg which I didn't write, and while I've refactored it such that it's almost unrecognizable there are bits I don't understand.
I'll get through it, as it's more of a motivational issue than a technical one. In a battle with machines I always win - eventually.
Check out my IoT graphics library here:
https://honeythecodewitch.com/gfx
And my IoT UI/User Experience library here:
https://honeythecodewitch.com/uix
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Quote: there are bits I don't understand
😱
"Before entering on an understanding, I have meditated for a long time, and have foreseen what might happen. It is not genius which reveals to me suddenly, secretly, what I have to say or to do in a circumstance unexpected by other people; it is reflection, it is meditation." - Napoleon I
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Is it drawing black figures on a black background?
(ducks)
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It's actually a good question, but I really don't think so in this case.
Check out my IoT graphics library here:
https://honeythecodewitch.com/gfx
And my IoT UI/User Experience library here:
https://honeythecodewitch.com/uix
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