The best Hacker News stories from Show from the past day
Latest posts:
Show HN: Term Typer – Learn a language by typing
Hey HN! I'm from Brazil and I created Term Typer to help my little brother learn other languages while practicing his keyboard typing skills. We've found it super helpful and fun. Feel free to try it out and let me know your thoughts and feedback. Thanks a lot!
Show HN: Term Typer – Learn a language by typing
Hey HN! I'm from Brazil and I created Term Typer to help my little brother learn other languages while practicing his keyboard typing skills. We've found it super helpful and fun. Feel free to try it out and let me know your thoughts and feedback. Thanks a lot!
Show HN: Term Typer – Learn a language by typing
Hey HN! I'm from Brazil and I created Term Typer to help my little brother learn other languages while practicing his keyboard typing skills. We've found it super helpful and fun. Feel free to try it out and let me know your thoughts and feedback. Thanks a lot!
Show HN: Solo founder launched iOS Development Agency as a Subscription
Hi there! I recently launched my iOS development agency with a subscription model, inspired by DesignJoy founder Brett Williams. My agency is among the first in the US (or in Texas, or in Dallas ;)) to offer iOS development services on a month-to-month basis. The subscription is flexible, allowing for pauses or cancellations at any time. With 10 years of experience in software development and success as a consultant for Fortune 500 companies, I aim to leverage my expertise to help startups and other companies elevate their iOS development.
Show HN: I just made an All-In-One IP Toolbox form builder open-sourced
Show HN: Semantic Search React Component
If you've ever used CTRL+F on websites or documentation, you'll love this functionality.
Show HN: I made a tool which fixes broken JSONs
Show HN: Docker-boot – Run a system from RAM without LiveCD
How often do you screw up the system so much you have to reformat the disk (without losing data) to fix it? Well, sometimes I do, and sometimes I can't be bothered to burn a live ISO onto a USB stick. There's initramfs, but it's hardly a pleasant environment, with network configuration and all.<p>My go-to solution has typically been to create a chroot with busybox and a few utilities in /tmp, chroot into it, and then kill services that use the solid drive so that I can unmount it. That's an error-prone process, and sometimes systemd itself uses disk, so you can't unmount the drive despite killing all the userland but PID 1.<p>This script improves the UX. It uses a Docker image as the chroot base, which is much easier to tailor to your needs, and automagically commits all the atrocities, such as tearing down all the userland processes, including PID 1, and re-spawning the host system from the container filesystem.<p>It also drives libostree and Nix users mad, because it can be used to try out a new DE or even a whole OS without polluting the host filesystem or spawning a virtual machine. The video in the README shows me trying out KDE + SDDM from a host running GNOME + GDM3.
Show HN: Purl – A Simple Tool for Text Processing
Hello HN community,<p>I'm excited to share a new command-line tool I developed called purl, inspired by the simplicity of Perl one-liners for efficient text processing. Purl features include Perl-like regex that simplifies text manipulation, it's cross-platform so works equally well on macOS, Linux, etc., and it's quick and easy to install. The tool also supports simple commands such as -replace, -filter, and -exclude, and offers optional color output to enhance readability.<p>Purl is a practical alternative to traditional tools like sed and grep, designed to address some of their common limitations.<p>For more information and to try purl yourself, visit: <a href="https://github.com/catatsuy/purl">https://github.com/catatsuy/purl</a><p>I appreciate any feedback!
Show HN: Purl – A Simple Tool for Text Processing
Hello HN community,<p>I'm excited to share a new command-line tool I developed called purl, inspired by the simplicity of Perl one-liners for efficient text processing. Purl features include Perl-like regex that simplifies text manipulation, it's cross-platform so works equally well on macOS, Linux, etc., and it's quick and easy to install. The tool also supports simple commands such as -replace, -filter, and -exclude, and offers optional color output to enhance readability.<p>Purl is a practical alternative to traditional tools like sed and grep, designed to address some of their common limitations.<p>For more information and to try purl yourself, visit: <a href="https://github.com/catatsuy/purl">https://github.com/catatsuy/purl</a><p>I appreciate any feedback!
Show HN: Building a GPS receiver
Hi everyone!<p>Shortly after publishing my iOS 4 jailbreak last October[1], I got to work on my next hobby project: a from-scratch homebrew GPS receiver, which can solve the user’s location solely from billions of radio antenna samples.<p>I took a commodity SDR (alongside the Python standard library and numpy) and built a signal processing pipeline that can detect and track GPS satellites over many minutes, drop and pick up satellites as they come in and out of view, and precisely determine the user’s position and clock inaccuracy.<p>All told, gypsum can go from a cold start to a fix on the user’s position, and the precise time, in less than a minute of listening to the antenna. I went on a journey of learning how to detect and track satellite signals that are literally too quiet to hear, and I hope that some of the magic comes through in the posts!<p>After implementing this myself and walking the long road of getting it working, I’m left completely stunned by the brilliance of GPS, across so many axes. I hope you enjoy the read!<p>On a more personal note, I’ll be starting a new job next week which isn’t as amenable to publishing side projects, and therefore this will be my last publicly-published project for some time. I’ve had great experiences making and sharing projects on here, and I’m really grateful for the positive feedback that’s been shared!<p>[1]: <a href="https://news.ycombinator.com/item?id=37736318">https://news.ycombinator.com/item?id=37736318</a>
Show HN: Building a GPS receiver
Hi everyone!<p>Shortly after publishing my iOS 4 jailbreak last October[1], I got to work on my next hobby project: a from-scratch homebrew GPS receiver, which can solve the user’s location solely from billions of radio antenna samples.<p>I took a commodity SDR (alongside the Python standard library and numpy) and built a signal processing pipeline that can detect and track GPS satellites over many minutes, drop and pick up satellites as they come in and out of view, and precisely determine the user’s position and clock inaccuracy.<p>All told, gypsum can go from a cold start to a fix on the user’s position, and the precise time, in less than a minute of listening to the antenna. I went on a journey of learning how to detect and track satellite signals that are literally too quiet to hear, and I hope that some of the magic comes through in the posts!<p>After implementing this myself and walking the long road of getting it working, I’m left completely stunned by the brilliance of GPS, across so many axes. I hope you enjoy the read!<p>On a more personal note, I’ll be starting a new job next week which isn’t as amenable to publishing side projects, and therefore this will be my last publicly-published project for some time. I’ve had great experiences making and sharing projects on here, and I’m really grateful for the positive feedback that’s been shared!<p>[1]: <a href="https://news.ycombinator.com/item?id=37736318">https://news.ycombinator.com/item?id=37736318</a>
Show HN: Building a GPS receiver
Hi everyone!<p>Shortly after publishing my iOS 4 jailbreak last October[1], I got to work on my next hobby project: a from-scratch homebrew GPS receiver, which can solve the user’s location solely from billions of radio antenna samples.<p>I took a commodity SDR (alongside the Python standard library and numpy) and built a signal processing pipeline that can detect and track GPS satellites over many minutes, drop and pick up satellites as they come in and out of view, and precisely determine the user’s position and clock inaccuracy.<p>All told, gypsum can go from a cold start to a fix on the user’s position, and the precise time, in less than a minute of listening to the antenna. I went on a journey of learning how to detect and track satellite signals that are literally too quiet to hear, and I hope that some of the magic comes through in the posts!<p>After implementing this myself and walking the long road of getting it working, I’m left completely stunned by the brilliance of GPS, across so many axes. I hope you enjoy the read!<p>On a more personal note, I’ll be starting a new job next week which isn’t as amenable to publishing side projects, and therefore this will be my last publicly-published project for some time. I’ve had great experiences making and sharing projects on here, and I’m really grateful for the positive feedback that’s been shared!<p>[1]: <a href="https://news.ycombinator.com/item?id=37736318">https://news.ycombinator.com/item?id=37736318</a>
Show HN: Stack, an open-source Clerk/Firebase Auth alternative
Hey HN! Happy to finally launch Stack. We made it because we like to put apps into production quickly, and authentication & user management was taking up way too much time.<p>We have components like <SignIn /> and <AccountSettings /> that automatically adapt to whatever theme & design system you're using. Check the blog post to see the example with Radix UI and Joy UI.<p>Also, there's an admin dashboard for monitoring and editing accounts. Stack is 100% AGPL/MIT-licensed, so you can self-host it.<p>Cheers!
Show HN: Stack, an open-source Clerk/Firebase Auth alternative
Hey HN! Happy to finally launch Stack. We made it because we like to put apps into production quickly, and authentication & user management was taking up way too much time.<p>We have components like <SignIn /> and <AccountSettings /> that automatically adapt to whatever theme & design system you're using. Check the blog post to see the example with Radix UI and Joy UI.<p>Also, there's an admin dashboard for monitoring and editing accounts. Stack is 100% AGPL/MIT-licensed, so you can self-host it.<p>Cheers!
Show HN: Stack, an open-source Clerk/Firebase Auth alternative
Hey HN! Happy to finally launch Stack. We made it because we like to put apps into production quickly, and authentication & user management was taking up way too much time.<p>We have components like <SignIn /> and <AccountSettings /> that automatically adapt to whatever theme & design system you're using. Check the blog post to see the example with Radix UI and Joy UI.<p>Also, there's an admin dashboard for monitoring and editing accounts. Stack is 100% AGPL/MIT-licensed, so you can self-host it.<p>Cheers!
Show HN: PostgreSQL index advisor
This is a Postgres extension that can determine if a query should have an index. For example, for this table:<p><pre><code> create table book(
id int primary key,
title text not null
);
</code></pre>
You can run `index_advisor()` to see if there should be an index on a select statement:<p><pre><code> select *
from index_advisor('select book.id from book where title = $1');
</code></pre>
And it will return (summarized):<p><pre><code> {"CREATE INDEX ON public.book USING btree (title)"}
</code></pre>
It works particularly well with pg_stat_statements[0] which tracks execution statistics of all SQL statements executed on your Postgres database.<p>It leans heavily on HypoPG[1], an excellent extension to determine if PostgreSQL will use a given index without spending resources to create them.<p>[0] pg_stat_statements: <a href="https://www.postgresql.org/docs/current/pgstatstatements.html" rel="nofollow">https://www.postgresql.org/docs/current/pgstatstatements.htm...</a><p>[1] <a href="https://github.com/HypoPG/hypopg">https://github.com/HypoPG/hypopg</a>
Show HN: PostgreSQL index advisor
This is a Postgres extension that can determine if a query should have an index. For example, for this table:<p><pre><code> create table book(
id int primary key,
title text not null
);
</code></pre>
You can run `index_advisor()` to see if there should be an index on a select statement:<p><pre><code> select *
from index_advisor('select book.id from book where title = $1');
</code></pre>
And it will return (summarized):<p><pre><code> {"CREATE INDEX ON public.book USING btree (title)"}
</code></pre>
It works particularly well with pg_stat_statements[0] which tracks execution statistics of all SQL statements executed on your Postgres database.<p>It leans heavily on HypoPG[1], an excellent extension to determine if PostgreSQL will use a given index without spending resources to create them.<p>[0] pg_stat_statements: <a href="https://www.postgresql.org/docs/current/pgstatstatements.html" rel="nofollow">https://www.postgresql.org/docs/current/pgstatstatements.htm...</a><p>[1] <a href="https://github.com/HypoPG/hypopg">https://github.com/HypoPG/hypopg</a>
Show HN: PostgreSQL index advisor
This is a Postgres extension that can determine if a query should have an index. For example, for this table:<p><pre><code> create table book(
id int primary key,
title text not null
);
</code></pre>
You can run `index_advisor()` to see if there should be an index on a select statement:<p><pre><code> select *
from index_advisor('select book.id from book where title = $1');
</code></pre>
And it will return (summarized):<p><pre><code> {"CREATE INDEX ON public.book USING btree (title)"}
</code></pre>
It works particularly well with pg_stat_statements[0] which tracks execution statistics of all SQL statements executed on your Postgres database.<p>It leans heavily on HypoPG[1], an excellent extension to determine if PostgreSQL will use a given index without spending resources to create them.<p>[0] pg_stat_statements: <a href="https://www.postgresql.org/docs/current/pgstatstatements.html" rel="nofollow">https://www.postgresql.org/docs/current/pgstatstatements.htm...</a><p>[1] <a href="https://github.com/HypoPG/hypopg">https://github.com/HypoPG/hypopg</a>
Show HN: I made a tool to clean and convert any webpage to Markdown
My partner usually writes substack posts which I then mirror to our website’s blog section.<p>To automate this, I made a simple tool to scrape the post and clean it so that I can drop it to our blog easily. This might be useful to others as well.<p>Oh and ofcourse you can instruct GPT to make any final edits :D