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Comment Hurd is the kernel component of GNU Emacs (Score 1) 312

Seriously, if you google "GNU Guix", you'll see that system startup scripts will be written in Lisp, the package manager will use Lisp to describe packages. Also, I note that the microkernel architecture will allow code that is traditionally part of the kernel to run in user mode and be written in Lisp.

It looks to me that they are building a new system that combines the best aspects of Unix and the legendary Lisp Machine. Which would be kind of cool.

Comment Lost wax and lost PLA (Score 2) 49

One of the hackers at my makerspace has successfully used lost-PLA casting to cast steel. The result was a functional part used in a battle bot. That's using a standard consumer 3D printer.

Jewelers have been using 3D printers for lost-wax casting for years; there are specialized 3D printers sold for this.

Comment Summary (Score 1) 201

The slide at 24:49 in the video summarizes the argument:
* Open Hardware licensing attempts to work using copyright but is unsuccessful in doing so. (You can't actually enforce an Open Hardware license in the courts, where the mechanism is a copyright on an electronic circuit. You can't really copyright a circuit.)
* Open Hardware licensing only works as the developers would have it work when there is a *patent* on the design.
* Patents are expensive to pursue, and not particularly attractive to people who work on Open things.
* If the law was changed to allow electronic circuits to be copyrighted, that would actually cause more harm to the community than good. (The reasons for this are discussed later in the video.) We could, through our own actions, make that happen.

Submission + - Google finds D-Wave machine to be 10^8 times faster than simulated annealing (blogspot.ca)

An anonymous reader writes: From Google Research blog:
We found that for problem instances involving nearly 1000 binary variables, quantum annealing significantly outperforms its classical counterpart, simulated annealing. It is more than 10^8 times faster than simulated annealing running on a single core. We also compared the quantum hardware to another algorithm called Quantum Monte Carlo. This is a method designed to emulate the behavior of quantum systems, but it runs on conventional processors. While the scaling with size between these two methods is comparable, they are again separated by a large factor sometimes as high as 10^8.

Comment Re:License (Score 4, Informative) 255

No, LLVM/clang is all about having a superior architecture to GCC, so that a lot of new applications become possible. One of the key ideas is that the optimizer and code generator are libraries with a C++ API. One cool application of this is that you can use the LLVM library to implement a JIT compiler for your interpreted language: you generate the machine code directly into memory (instead of to a file), then execute it.

LLVM has many more developers than GCC, and is evolving and improving more quickly than GCC can. This is because of the licence: it turns out that corporations like Apple are more willing to provide developer resources for this open source project if the licence isn't copyleft. For this particular project, this means that the BSD license is more successful than the GPL. Of course, there are other projects for which the GPL produces better results in the real world.

If you want to make a GPL fork of LLVM just for the pure pleasure of fucking over the original project due their heresy in choosing a license you don't approve of, well, good luck with that.

Comment Re:Intermediate formats (Score 2) 255

Clang can compile to the LLVM "IR" format, which is a mostly machine-independent Intermediate Representation. Kind of like bytecode.

The IR file format has two variations: a human readable text format, and a more compact binary format.

Given an IR file, you can optimize it, which produces another IR file, or you can compile it into an object file.

Comment Re:Long-term support (Score 1) 437

Rust has already been around for 10 years. The project started in 2006 as a hobby project, and "went big" in 2009 when people could play with a working Rust compiler, and Mozilla sponsored it. There are currently 1200 contributers to the Rust project. Given all the momentum, it will likely be around 10 years from now.

Comment Re:Is Rust written in Rust? (Score 1) 437

The Rust compiler and runtime system are written in Rust.

The compiler uses the LLVM library for code generation, which is a C++ library, so there is a bit of C++ glue code to interface the compiler to LLVM.

The runtime uses parts of the C library to make system calls, so there is a bit of C glue code to interface the runtime to the C library.

Comment Re:Why not to use Rust (Score 2) 437

1) The Rust project is not controlled by Mozilla. Just look at the copyrights on the rust source code. It's permissive open source, with copyright shared by ~1200 individuals, and Mozilla is not on that list. So this is like spreading FUD by warning people that Linux is controlled by the Linux Foundation (Linus's employer)--hint, it isn't.

2) Mozilla and Oracle are quite different. The Mozilla Foundation is a non-profit, open source organization that exists to provide a public benefit through the creation of open source software. The Mozilla Corporation (employer of some of the Rust developers) is a wholly owned subsidiary that donates all of its profit to the foundation. By contrast, Oracle is known for being one of the most rapaciously greedy software organizations in existence: just consider the Oracle article on Slashdot right now, about how Oracle rips off customers via "traps" in the opaque licencing terms.

3) How can you be sure that Rachael Craig and Nicolette Verlinden are cisgender males? They have female names and photos.

So yeah, I'm pretty sure the parent is a troll, and I fell for the bait.

Comment Re:wouldn't hold my breath (Score 4, Informative) 437

1st paragraph is false, due to the rather extraordinary design process that Rust went through.

designers also go off on an ego-trip, introducing numerous gratuitous syntactic changes, overlooking important features in their predecessor language they didn't understand

The Rust community is quite large, including many skilled language designers. The Rust github repository has ~1200 contributers. With that pool of talent,
there are no features of C/C++ that the designers don't understand. With this kind of community, and a formal change review/feature addition process, there's not much danger of a single ego-tripping designer messing up the language.

adding features few people actually need

The project transitioned from a hobby project to an official Mozilla project in 2009. During the 6 years from 2009 to 2015 (when the Rust 1.0 design was stabilized and released), a lot of Rust code was written. Features that seemed like a good idea at the time, but which had little practical use, were removed before 1.0.

3rd paragraph is also incorrect. The main feature of Rust is guaranteed memory safety, without a garbage collector, enforced by compile time type checking rather than by introducing run-time overhead. This memory safety includes a guarantee that shared global data can't be corrupted by simultaneous writes from different threads, something that no other language offers. C++ doesn't offer this today, no other language does.

I agree that Rust will influence future languages, but I don't think it will have much effect on C. The C++ community is already looking at Rust and trying to figure out how to compete with what it offers.

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I THINK THEY SHOULD CONTINUE the policy of not giving a Nobel Prize for paneling. -- Jack Handley, The New Mexican, 1988.

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