JDK
Bitcoin
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JDK | Bitcoin | |
---|---|---|
191 | 906 | |
18,352 | 75,561 | |
2.1% | 1.7% | |
10.0 | 10.0 | |
7 days ago | 6 days ago | |
Java | C++ | |
GNU General Public License v3.0 only | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
JDK
- JEP draft: Exception handling in switch
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Java 23: The New Features Are Officially Announced
Completely gutted from the OpenJDK, last I checked. See here for the culprit PR: https://github.com/openjdk/jdk/pull/18688
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macOS 14.4 might break Java on your machine
> Yes, they're changing one aspect of signal handler use to work around this problem. They're not stopping the use of signal handlers in general. Hotspot continues to use signals for efficiency in general. See https://github.com/openjdk/jdk/blob/9059727df135dc90311bd476...
This whole thread is about SIGSEGV, and specifically their SIGSEGV handling. However, catching normal signals is not about efficiency.
Some of their exception handling is still odd: There is no reason for a program that receives SIGILL to ever attempt continuing. But others is fine, like catching SIGFPE to just forward an exception to the calling code.
(Sure, you could construct an argument to say that this is for efficiency if you considered the alternative to be implementing floating point in software so that all exceptions exist in user-space, but hardware floating point is the norm and such alternative would be wholly unreasonable.)
> The wonderful thing about choosing not to care about facts is having whatever opinions you want.
I appreciate the irony of you making such statement, proudly thinking that your opinion equals fact, and therefore any other opinion is not.
This discussion is nothing but subjective opinion vs. subjective opinion. Facts are (hopefully, as I can only speak for myself) inputs to both our opinions, but no opinion about "good" or "bad", "nasty" or not can ever be objective. Objective code quality does not exist.
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The Return of the Frame Pointers
I remember talking to Brendan about the PreserveFramePointer patch during my first months at Netflix in 2015. As of JDK 21, unfortunately it is no longer a general purpose solution for the JVM, because it prevents a fast path being taken for stack thawing for virtual threads: https://github.com/openjdk/jdk/blob/d32ce65781c1d7815a69ceac...
- JDK-8180450: secondary_super_cache does not scale well
- The One Billion Row Challenge
- AVX2 intrinsics for Arrays.sort methods (int, float arrays)
- A gentle introduction to two's complement
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Java JEP 461: Stream Gatherers
Map doesn't implement the Collection interface.
https://github.com/openjdk/jdk/blob/master/src/java.base/sha...
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C++23: Removing garbage collection support
C++ lets you write anything you can imagine, and the language features and standard library often facilitate that. The committee espouses the view that they want to provide many "zero [runtime] cost," abstractions. Anybody can contribute to the language, although the committee process is often slow and can be political, each release the surface area and capability of the language gets larger.
I believe Hazard Pointers are slated for C++26, and these will add a form "free later, but not quite garbage collection" to the language. There was a talk this year about using hazard pointers to implement a much faster std::shared_ptr.
It's a language with incredible depth because so many different paradigms have been implemented in it, but also has many pitfalls for new and old users because there are many different ways of solving the same problem.
I feel that in C++, more than any other language, you need to know the actual implementation under the hood to use it effectively. This means knowing not just what the language specifies, but can occaissionally require knowing what GCC or Clang generate on your particular hardware.
Many garbage collected languages are written in or have parts of their implementations in C++. See JS (https://github.com/v8/v8)and Java GC (https://github.com/openjdk/jdk/tree/36de19d4622e38b6c00644b0...)
I am not an expert on Java (or C++), so if someone knows better or can add more please correct me.
Bitcoin
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Analyzing Bitcoin Transactions with Lightning Node Insights
Ubuntu/Debian: Install LND: https://github.com/lightningnetwork/lnd/blob/master/docs/INSTALL.md#install-lnd Install Bitcoin Core: https://github.com/bitcoin/bitcoin/blob/master/doc/build-unix.md#linux-instructions
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Simulate your first Lightning transaction on the Bitcoin regtest network Part 1 (MacOS)
To be able to follow along, you must have both bitcoind and lnd installed.
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Generating and Working With ScriptPubKeys in Bitcoin Transactions
As mentioned previously, ScriptPubKeys are scripts that embody the locking conditions of bitcoins in a Bitcoin transaction. They are a crucial element of a Bitcoin transaction that specifies the requirements that must be met before an unspent transaction output (UTXO) is used. The ScriptPubKey, combined with the Amount, creates an output of a Bitcoin transaction. Like every other script, ScriptPubKeys are made up of operators and data. During the encoding of a transaction, both data and the operands are represented in hexadecimal format. You can find the hex representation for all operands used in Bitcoin Scripts here.
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Understanding BTC Software
Which article? Have a look at Luke's CVE and pull request https://nvd.nist.gov/vuln/detail/CVE-2023-50428 https://github.com/bitcoin/bitcoin/pull/28408
- On chain censorship "war" heats up on BTC with a CVE raised against Ordinals
- What are some of the arguments for / against limiting datacarriersize ?
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BTC's Luke Dashjr: '24 Bitcoin Core Update Will Disrupt Ordinals, BRC-20
From github pull request discussion: https://github.com/bitcoin/bitcoin/pull/28408
- Daily General Discussion - December 10, 2023
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Polling The r/Bitcoin Community: Should Bitcoin be JUST a monetary network for P2P Transactions, Or Also a Platform For Content?
See: https://github.com/bitcoin/bitcoin/issues/10494
What are some alternatives?
Graal - GraalVM compiles Java applications into native executables that start instantly, scale fast, and use fewer compute resources 🚀
umbrel - A beautiful home server OS for self-hosting with an app store. Buy a pre-built Umbrel Home with umbrelOS, or install on a Raspberry Pi 4, Pi 5, any Ubuntu/Debian system, or a VPS.
aircraft - The A32NX & A380X Project are community driven open source projects to create free Airbus aircraft in Microsoft Flight Simulator that are as close to reality as possible.
BitcoinJS - A javascript Bitcoin library for node.js and browsers.
steam-runtime - A runtime environment for Steam applications
js-git - A JavaScript implementation of Git.
OkHttp - Square’s meticulous HTTP client for the JVM, Android, and GraalVM.
PDFKit - A JavaScript PDF generation library for Node and the browser
kitten - A statically typed concatenative systems programming language.
webtorrent - ⚡️ Streaming torrent client for the web
intellij-community - IntelliJ IDEA Community Edition & IntelliJ Platform
naivecoin - A cryptocurrency implementation in less than 1500 lines of code