akashakya

For lightweight sandboxing on Linux you can use bubblewrap or firejail instead of Docker. They are faster and _simpler_. Here is a bwrap script I wrote to run Claude in a minimal sandbox an hour back:

    exec bwrap \
      --ro-bind /usr /usr \
      --ro-bind /etc /etc \
      --ro-bind /run /run \
      --ro-bind "$NODE_PATH" /node \
      --proc /proc \
      --dev /dev \
      --symlink usr/lib64 /lib64 \
      --tmpfs /tmp \
      --unshare-all \
      --share-net \
      --die-with-parent \
      --new-session \
      --bind "$HOME/claude" /claude \
      --bind "$HOME/.claude.json" /claude/.claude.json \
      --bind "$HOME/.claude" /claude/.claude \
      --setenv HOME /claude \
      --setenv PATH "/node:/claude/bin:/usr/bin" \
      --bind "$(pwd)" /work \
      --chdir /work \
      /claude/bin/claude "$@"

akashakya

2 anni fadiscuss

Tl;dr fancy way to map 1D time to 2D image

If you imagine a movie as a line along the time axis with each frame as a pixel, there are multiple way to create an 2D image.

Bargraph is simple approach, but essentially it is still is a one dimensional. We are only using x axis.

Zig-zag pattern is another approach, where you start from top to bottom, left to right. But in this case the relative distance between close frames aren't fully preserved. Two distant frames might appear together, or close frames might end up far apart, which leads to odd looking artifacts.

Hilbert curve is a pattern to map 1D to fill space (2D) such that relative distance between any two points (frames) on the 1D line is somewhat preserved. That's why it appears as clump/blob.

Here it is hard to see the movie progression from start to end but all frames from a scene are always closer, which was what I was aiming. I find it interesting that visual aspect (color/scene) is easy to see here but temporal aspect isn't.

I was excited about the whole 1D to 2D mapping aspect at that time, leading to this toy.

akashakya

2 anni fadiscuss

I did something similar a few years back. I find the Hilbert curve pattern much more interesting.

https://github.com/akash-akya/hilbert-montage

Not an original idea, it was inspired by someone else at that time.

akashakya

2 anni fadiscuss

I read the same book, also in Kannada. It was bought by my father when he was in high school. Of all the science books I have read, this one was more engaging and had a bigger impact on me growing up.

My father said he used to buy lot of soviet translations because they were cheap but the content was of high quality. Even after 30 years, when I picked them up, they were clearly distinct, including the Art, print quality and binding.

akashakya

4 anni fadiscuss

  Location: Bengaluru, India
  Remote: Yes
  Willing to relocate: Yes
  Technologies: Elixir & OTP, JS, Ruby, C/C++, Java, Lisp, Kafka, Kubernetes, Redis, React, SQL
  Résumé/CV: https://docs.google.com/document/d/1VZfV7HaVw1P_EQscJUli6Ot0BW8k3GsoxgQS5fK5SCQ/edit
  Email: akashh246 [_at_] gmail [_dot_] com

Software Engineer with 6+ years of experience. Currently working with a large scale distributed system involving Elixir. Worked on distributed job scheduler, event driven system, and RESTful microservices. I have experience architecting a product from ground up, leading a team for a while, working as an individual contributor and as a consultant. I am active in the Open Source community, contributing and maintaining a few projects.

GitHub: https://github.com/akash-akya

akashakya

4 anni fadiscuss

  Location: Bengaluru, India
  Remote: Yes
  Willing to relocate: Yes
  Technologies: Elixir & OTP, JS, Ruby, C/C++, Java, Lisp, Kafka, Kubernetes, Redis, React, SQL
  Résumé/CV: on request
  Email: akashh246 [_at_] gmail [_dot_] com

Software Engineer with 6+ years of experience. Currently working on a large scale distributed system involving Elixir. Worked on distributed job scheduler, event driven system, and RESTful microservices. I have experience architecting a product from ground up, leading a team, worked as an individual contributor and as a consultant. Outside work, I am active in the Open Source community, contributing and maintaining several projects.

I am looking for challenging roles involving complex problem/domain

GitHub: https://github.com/akash-akya

akashakya

6 anni fadiscuss

I don't know much about WASM, but how does this work with shared libraries? Is it even possible to call a shared library without any safety guarantees?

akashakya

7 anni fadiscuss

> Streams, available in 5+ can handle a lot more use cases fluently

Stream does solve the backup queue issue, but not being able to filter messages from the consumer's pending list makes implementing retry mechanism and exponential backoff hard (without reaching to sorted set).

Though, I can understand the Redis team's decision to keep it simple.

akashakya

7 anni fadiscuss

Ahh. You are right. I misread the (3)[....] notation. Its not reset but just different representation.

akashakya

7 anni fadiscuss

> one can increment a single value outside the bloom filter to keep the values in the bloom filter low. Example: Instead of storing bloom filter [4,3,3,5,7,4,3,3,5], one could store it as (3)[1,0,0,2,4,1,0,0,2].

CMIIW, This only works if it's guaranteed that the reset (transition from high values to low) is propagated to all the nodes. Which is not the case in a distributed system. Like, if a node is not reachable for a long time and every other node is reset except this one then its possible to have a state in which we can have false negatives.

akashakya

7 anni fadiscuss

By that logic anything which kills mass population is "not so bad". Why not just bomb cities. Infact if you read it as a response to "world wars", though not intended, that way of thinking justify that.

akashakya

7 anni fadiscuss

That depends on the usecase. Sometimes you do want to start with clean state. If the process is in some invalid state which caused the crash in the first place, restarting the process is useless in this case

akashakya

8 anni fadiscuss

ah, that was a bad example for so many reasons. slightly better example

  foo_bar -> fooBar()
  baz_car -> bazCar()
  some_thing -> someThing()

An even better example is doing the reverse

  fooBar() -> foo_bar
  bazCar() -> baz_car
  someThing() -> some_thing

You can put cursors at every line and then use subword movement to find the word boundary.

> you still need some kind of regex to put the cursors at the right places, don't you?

I didn't say it replaces regex. You need regex just to place the cursors. you don't have to write complex regexp edit text (as shown in this example)

akashakya

8 anni fadiscuss

Agreed, I think of macro as a superset of multiple-cursors. Heck, with macro you can even run arbitrary code to generate text dynamically. I had the pleasure of doing this multiple times.

In Emacs, you can use multiple registers for storing code and data for this purpose

akashakya

8 anni fadiscuss

Yes, no silver bullet. But most of my use case I find a generic pattern so I don't check the individual edits. Anything more complex I'll switch to macros.

Btw, I meant undo like global undo which will let you undo the last keypress for all of the cursors. In your case, you meant undo for a particular instance of change I guess.

Also, let's say there is different character after _

  foo_bar -> fooBar
  baz_car -> bazCar
  some_thing -> someThing

Maybe you can do this with regex. but for a new user, he has to look it up. With multiple-cursors, you don't even have to think about it.

However, you can use a macro.

akashakya

8 anni fadiscuss

With multiple cursors you are seeing the changes as you are editing. and you have all of the normal editing shortcuts at your disposal. Example, if you made a mistake while typing just hit undo.

akashakya

8 anni fadiscuss

Multiple-cursor is useful when you want to edit lines which have non-trivial edits or doesn't have a common string to use find-replace. simple example

   foo_bar -> fooBar
   bar_baz -> barBaz

Sometimes even this doesn't cut it and have to use mighty Emacs macros. (I'm sure something similar exits for VIM)

akashakya

8 anni fadiscuss

Have you tried doom-emacs? https://github.com/hlissner/doom-emacs

It has an insane startup speed! I tried once and it opened within a second. I'm not an evil user myself, so don't know about the vim compatibility.

If you are interested in making the startup faster, check https://github.com/hlissner/doom-emacs/wiki/FAQ#how-is-dooms... from the same author

akashakya

8 anni fadiscuss

> Loops are closer to what CPU actually does. A compiler is therefore simpler to implement and will likely contain less surprises.

I dont find the argument convincing. By that assembly is closer to what CPU actually does, why not write code using goto (or binary)? We all can agree on its easy to write reasonably good code high-level languages. I think it because high-level languages are closer to the problem domain (or our thinking), hence it's easier to define the solution in these languages. same for recursion.

> It’s easier to use a debugger on procedural-style or OO code (step in/over/out, local variables) compared to recursive functional style advertised by SICP.

I feel exactly opposite. OO by definition have state bound to object outside the method (not actually local variable), so you have to watch all the objects method is affecting. Not pleasant experience when you have hundreds of objects. A recursive code on the other hand usually depends only on the local arguments so you can only focus on current step.

> In most runtimes, call stack is limited to a small size, a couple of megabytes. Stack overflow exception is hard to handle in a reasonable way. When instead using a loop with a stack container for the state, it can be much larger, also easier to handle overflows i.e. implement soft and hard limits.

Well, depends on the platform you are working on. For desktop at least it's definitely not "a couple of megabytes".

I feel that most of the time choice is between readability and performance. Sometimes maybe the solution is inherently iterative/recursive making choice easier. ymmv though.

akashakya

8 anni fadiscuss

You should definitely check out different versions. The story they usually use in tv-series and 'parents' tell is the same version which is as you said boring, and plain good guy vs bad guy plot. But many ancient versions excellent[1][2] and they not dragged like the original!, even better if you are into prosody(kavya)[3].

[1] https://en.wikipedia.org/wiki/Urubhanga

[2] https://en.wikipedia.org/wiki/Vikramarjuna_Vijaya

[3] https://en.wikipedia.org/wiki/Sanskrit_prosody

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