Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

I made my own Git

tonystr.net

Post reply on HN
Print view View original

81–90 of 184 posts

Re: I made my own Git

#81

Post by TonyStr »

b1temy wrote: post #67

Nice work, it's always interesting to see how one would design their own VCS from scratch, and see if they fall into problems existing implementations fell into in the past and if the same solution was naturally reached. The `tvc ls` command seems to always recompute the hash for every non-ignored file in the directory and its children. Based on the description in the blog post, it seems the same/similar thing is hap…

You are completely right about tvc ls recomputing each hash, but I think it has to do this? A timestamp wouldn't be reliable, so the only reliable way to verify a file's contents would be to generate a hash.

In my lazy implemenation, I don't even check if the hashes match, the program reads, compresses and tries to write the unchanged files. This is an obvious area to improve performance on. I've noticed that git speeds up object lookups by generating two-letter directories from the first two letters in hashes, so objects aren't actually stored as `.git/objects/asdf12ha89k9fhs98...`, but as `.git/objects/as/df12ha89k9fhs98...`.

>why were TOML files not considered at the end I'm just not that familiar with toml. Maybe that would be a better choice! I saw another commenter who complained about yaml. Though I would argue that the choice doesn't really matter to the user, since you would never actually write a commit object or a tree object by hand. These files are generated by git (or tvc), and only ever read by git/tvc. When you run `git cat-file `, you'll have to add the `-p` flag (--pretty) to render it in a human-readable format, and at that point it's just a matter of taste whether it's shown in yaml/toml/json/xml/special format.

Re: I made my own Git

#83

Post by storystarling »

kgeist wrote: post #2

>The hardest part about this project was actually just parsing. How about using sqlite for this? Then you wouldn't need to parse anything, just read/update tables. Fast indexing out of the box, too.

SQLite solves the storage layer but I suspect you run into a pretty big impedance mismatch on the graph traversals. For heavy DAG operations like history rewriting, a custom structure seems way more efficient than trying to model that relationally.

Re: I made my own Git

#84

Post by sailfast »

falcor84 wrote: post #23
jdiff wrote: post #19

Earlier quoted context omitted.

Only need one, they're not thinking critically about the media they consume during training.

Here's a sad prediction: over the coming few years, AIs will get significantly better at critical evaluation of sources, while humans will get even worse at it.

Hot take: Humans have always been bad at this (in the aggregate, without training). Only a certain percentage of the population took the time to investigate.

For most throughout history, whatever is presented to you that you believe is the right answer. AI just brings them source information faster so what you're seeing is mostly just the usual behavior, but faster. Before AI people would not have bothered to try and figure out an answer to some of these questions. It would've been too much work.

Re: I made my own Git

#86

Post by gxnxcxcx »

evntdrvn wrote: post #73
prodigycorp wrote: post #33

Earlier quoted context omitted.

Random aside about training data: One of the funniest things I've started to notice from Gemini in particular is that in random situations, it talks with english with an agreeable affect that I can only describe as.. Indian? I've never noticed such a thing leak through before. There must be a ton of people in India who are generating new datasets for training.

There was a really great article or blog post published in the last few months about the author's very personal experience whose gist was "People complain that I sound/write like an LLM, but it's actually the inverse because I grew up in X where people are taught formal English to sound educated/western, and those areas are now heavily used for LLM training." I wish I could find it again, if someone else knows the li…

I'm Kenyan. I don't write like ChatGPT, ChatGPT writes like me

https://news.ycombinator.com/item?id=46273466

Re: I made my own Git

#87

Post by stevekemp »

prmoustache wrote: post #42
whstl wrote: post #41

Earlier quoted context omitted.

I wish I could disagree with you, but what I'm seeing on average (especially at work) is exactly that: people asking stuff to ChatGPT and accepting hallucinations as fact, and then fighting me when I say it's not true.

There is "death by GPS" for people dying after blindly following their GPS instruction. There will definitely be a "death by AI" expression very soon.

Tesla-related fatalities probably count already, albeit without that label/name.

Re: I made my own Git

#90

Post by Phelinofist »

Phelinofist wrote: post #44
TonyStr wrote: post #27

Earlier quoted context omitted.

Interestingly, I looked at github insights and found that this repo had 49 clones, and 28 unique cloners, before I published this article. I definitely did not clone it 49 times, and certainly not with 28 unique users. It's unlikely that the handful of friends who follow me on github all cloned the repo. So I can only speculate that there are bots scraping new public github repos and training on everything. Maybe tha…

I selfhost Gitea. The instance is crawled by AI crawlers (checked the IPs). They never cloned, they just browse and take it directly from there.

For reference, this is how I do it in my Caddyfile:

   (block_ai) {
       @ai_bots {
           header_regexp User-Agent (?i)(anthropic-ai|ClaudeBot|Claude-Web|Claude-SearchBot|GPTBot|ChatGPT-User|Google-Extended|CCBot|PerplexityBot|ImagesiftBot)
       }

       abort @ai_bots
   }
Then, in a specific app block include it via

   import block_ai
Post reply on HN