Hacker News: chaitanya

Input Metrics vs. Output Metrics

chaitanya — Sun, 18 Jun 2023 20:43:57 +0000

Article URL: https://thenorth.io/input-metrics-vs-output-metrics/

Comments URL: https://news.ycombinator.com/item?id=36384260

Points: 2

# Comments: 0

naive-date: a tiny JavaScript lib for Date like objects that aren’t timestamps

chaitanya — Sun, 09 Oct 2022 16:06:55 +0000

Article URL: https://github.com/chaitanyagupta/naive-date

Comments URL: https://news.ycombinator.com/item?id=33142519

Points: 1

# Comments: 0

New comment by chaitanya in "Day.js – Fast 2kB alternative to Moment.js with the same modern API"

chaitanya — Sun, 09 Oct 2022 15:49:22 +0000

You can’t, because JavaScript date objects are just timestamps.

Here’s what I wrote on this (along with a small library to handle this problem): https://lisper.in/javascript-date

The many variations of the return statement in Kotlin

chaitanya — Mon, 11 Apr 2022 19:44:32 +0000

Article URL: https://twitter.com/chaitanya_gupta/status/1481846078203129858

Comments URL: https://news.ycombinator.com/item?id=30993789

Points: 2

# Comments: 1

New comment by chaitanya in "Ask HN: What is your Git commit/push flow?"

chaitanya — Thu, 17 Mar 2022 17:58:27 +0000

You can have the best of both worlds -- "commit early, commit often", and "nice clean commit histories" -- with git, and it is easier than most people think.

- So you start work on a new branch, and reach a checkpoint. Create a new commit with "git commit".

- Continue working, and when you reach the next checkpoint, create another commit. But this time, use "git commit --amend". Contrary to what the flag says, this doesn't modify the previous commit, instead it modifies your commit history and replaces the last commit with a new one[1]. So instead of having two new commits in your branch's history, you only have one.

- Repeat the process until you have something worth pushing to the remote.

- Once you've pushed to remote, remember to not make any further modifications to your git history[2] i.e. going forward, create a new commit and only then run "git commit --amend".

Now, there's an obvious question here: if "git commit --amend" keeps replacing the last commit with a new one, what happens when you mess things up and want to revert to NOT the last checkpoint, but some checkpoint before that?

The trick here that git has up its sleeve is called "git reflog". You see, while "git commit --amend" replaces the last commit in your branch's history with a new one, the older commit is not actually gone, its still there. And you can see all of them with "git reflog". Basically "git reflog" returns every commit at which the local HEAD (i.e. the commit checked out in your working directory) has been. So none of the commits that you replaced with --amend are actually lost, and you can find them all in the reflog.

Restoring to an older checkpoint becomes as easy as running "git reset --hard ", or if you want to play safe, "git checkout -b ".

Hope this helps!

Notes:

1. By design, a commit, or in fact most objects in git cannot be modified. They are immutable.

2. Basically you can play with git history as long as it is private to you and not shared with others. But the moment you push it to a remote you share with others it's no longer private and you must not modify that history anymore. Read Linus's note on keeping a clean git history: https://www.mail-archive.com/dri-devel@lists.sourceforge.net...

India Accidentally Fired Missile into Pakistan

chaitanya — Fri, 11 Mar 2022 15:39:47 +0000

Article URL: https://www.ndtv.com/india-news/defence-ministry-on-missile-landing-in-pak-technical-malfunction-led-to-accidental-firing-incident-deeply-regrettable-2817638

Comments URL: https://news.ycombinator.com/item?id=30641180

Points: 3

# Comments: 0

vfork() is still evil

chaitanya — Tue, 01 Mar 2022 19:24:32 +0000

Article URL: https://lisper.in/vfork-is-still-evil

Comments URL: https://news.ycombinator.com/item?id=30518780

Points: 5

# Comments: 0

JavaScript's Date is just a timestamp

chaitanya — Tue, 01 Feb 2022 23:52:56 +0000

Article URL: https://lisper.in/javascript-date

Comments URL: https://news.ycombinator.com/item?id=30171523

Points: 4

# Comments: 0

Fork-Exec for Python Programmers

chaitanya — Fri, 18 Jun 2021 21:34:56 +0000

Article URL: https://lisper.in/fork-exec-python

Comments URL: https://news.ycombinator.com/item?id=27555285

Points: 1

# Comments: 0

New comment by chaitanya in "Ask HN: I bought Voltaren at the chemist, now Google shows me ads for it. Why?"

chaitanya — Sun, 18 Apr 2021 16:18:31 +0000

Only plausible explanation I can think of is that perhaps you or your girlfriend looked something up about drying a wet memory stick.

New comment by chaitanya in "Show HN: Quickly find the cheapest EC2 instance that you need across regions"

chaitanya — Wed, 07 Apr 2021 22:36:13 +0000

> This would benefit from a "select all/none" option for the regions.

Yeah, that would help. I'll add this.

> Also, adding spot pricing would be SUPER helpful!

Unfortunately spot pricing is not available in the bulk pricing API, which is what I am using here. But there does seem to be a separate API to get the spot pricing history - I will try to use it.

Show HN: Quickly find the cheapest EC2 instance that you need across regions

chaitanya — Wed, 07 Apr 2021 21:44:05 +0000

Article URL: https://ec2-price-finder.lisper.in/

Comments URL: https://news.ycombinator.com/item?id=26731761

Points: 4

# Comments: 2

New comment by chaitanya in "An F-117 pilot and the officer who shot him down meet, 15 years later (2013)"

chaitanya — Mon, 08 Feb 2021 04:30:00 +0000

Growing up in the pre-Internet era Reader’s Digest was such a good resource due to stories like these. Was always excited to see a new magazine arrive every month.

I wonder if it’s any good now. Haven’t looked at it in years.

New comment by chaitanya in "Run More Stuff in Docker"

chaitanya — Sun, 27 Dec 2020 00:33:59 +0000

If you are on a Mac or Windows, this approach only works for utilities that can run on Linux. If you need to run a native Mac program for example, docker won't be able to run that.

Perhaps Nix might help here, but I've never used it, so can't say for sure.

New comment by chaitanya in "Roughly 2000 blogs running on a $7/month dyno"

chaitanya — Wed, 23 Sep 2020 13:45:46 +0000

If the upstream returns an error over HTTP, the CDN won’t hide it.

Indexes in PostgreSQL

chaitanya — Tue, 14 Apr 2020 20:44:10 +0000

Article URL: https://www.postgresql.org/docs/current/indexes.html

Comments URL: https://news.ycombinator.com/item?id=22871191

Points: 1

# Comments: 0

New comment by chaitanya in "Restarts in Common Lisp"

chaitanya — Wed, 01 Apr 2020 17:57:21 +0000

Many years ago I wrote about restarts in CL using the example of a CSV parser: https://lisper.in/restarts

Fun fact: the restarts based CSV parser was based on some real world work me and a colleague had done for an online travel portal. I wrote about it here: https://www.reddit.com/r/lisp/comments/7k85sf/a_tutorial_on_...

Webapp Security Exercises for Beginners

chaitanya — Tue, 07 Jan 2020 16:34:45 +0000

Article URL: https://gist.github.com/chaitanyagupta/0a43471099285d901dc1d03ab2314ec4

Comments URL: https://news.ycombinator.com/item?id=21981511

Points: 1

# Comments: 0

Kashmiris Are Disappearing from WhatsApp

chaitanya — Thu, 05 Dec 2019 09:13:42 +0000

Article URL: https://www.buzzfeednews.com/pranavdixit/hundreds-of-kashmiris-are-disappearing-from-their-whatsapp

Comments URL: https://news.ycombinator.com/item?id=21710960

Points: 2

# Comments: 0

New comment by chaitanya in "Why does 1.1.1.1 not resolve archive.is?"

chaitanya — Fri, 04 Oct 2019 12:56:13 +0000

Does 1.1.1.1 send ECS info to Cloudflare’s own nameservers? More generally, does 1.1.1.1 in any way treat Cloudflare’s own nameservers in a special way and send it information that it doesn’t send to others?

If the answer to these questions is no, then Cloudflare’s reasons for blocking ECS (ie privacy) carry weight. Otherwise no.