Show HN: I'm making a dynamic language in Rust https://ift.tt/JIxRljO

Show HN: I'm making a dynamic language in Rust https://ift.tt/lfAdGk3 An implementation of a dynamic programming language in Rust. Includes: Parser/Compiler, REPL, Virtual Machine, Bytecode Disassembler This started out as a learning project to teach myself Rust. It has grown into a decently substantial piece of software and I've learned quite a bit in the process! Some neat things: + A garbage collector that can store dynamically sized types without any double-indirection (i.e. I have my own Box implementation with manual alloc/dealloc) + The smart pointer used to reference GCed data is a thin pointer. The ptr metadata needed for DSTs is stored in the GC allocation itself, so that the GC smart pointer is just a single usize wide. This allows me to keep the core value enum Variant down to 16 bytes (8 bytes for data, the enum discriminant, and some padding). + The GC also supports weak references! + Statically dispatched type object model using a newtype wrapper and Rust's declarative macros. Ok, what that means is that I have a MetaObject trait that I can use to easily add new data types and define the behavior for specific types. Similar idea to Python's PyTypeObject though very different in implementation. However, I don't resort to dynamic dispatch or trait objects despite working with dynamically type data. Instead, I have a newtype wrapper over the core value enum Variant that statically dispatches to each of the enum branches! And then a few macros that minimize the boilerplate required if I want to add a new branch to Variant or a new method to MetaObject (just a single line in each case). + Different string representations! This was inspired by the flexstr crate. Strings that are short enough to fit inside a Variant are "inlined" directly in the value. Longer strings are either GCed or interned in a thread-local string table. All identifiers are interned. + An efficient implementation of closures inspired by Lua's upvalues. The language is still pretty WIP. I'm planning to add an import system, a small standard library, and a few other things (Yes, the name might not be the best, being also used by a well-known ReST docs generator, I'll take suggestions. I do like the name though, both as a reference to the mythological creature and the cat :D) April 25, 2022 at 05:16AM

Click here for more...
from #Bangladesh #News aka Bangladesh News Now!!!


Click here for more...
from #Bangladesh #News aka Bangladesh News Now!!!


Click here for more...
from #Bangladesh #News aka Bangladesh News Now!!!


Click here for more...
from #Bangladesh #News aka Bangladesh News Now!!!

Comments

Post a Comment

Popular posts from this blog

Save Promotional Expense with Sure Shot Outbound Telemarketing Services Provider

Image
Advertising and promotions are essential for getting hold of new clients. In the competitive business world of today, it has become vital to expand one’s operation. If you stagnate, then your competitors will surpass you. However, advertisement-based promotions do not always guarantee a fixed return. You can spend copious sums of money on mass media advertising. But, it is not a given that your business will receive the anticipated response. And, even if you get the clients, they might not always be the most suitable for your business. Hence, it is important to exploit other alternatives. Partnering with a sure shot outbound telemarketing services provider can be a good start. Pinpoint Your Target with Outbound Telemarketing Services Provider Unlike an advertising campaign that relies on the quality of content and its appeal to a vast group of clients, outbound telemarketing campaigns can be pinpointed towards a particular client base. There are many benefits of employing t...
Read more

Monetize Fiber Services Better and Improve ROI with Top Telecom Billing Software

  Fiber internet connection has changed the way web services are utilized. With speeds in excess of 100 mbps, it is a revolutionary technology that is replacing the traditional copper wire connectivity. Subscribers are drawn towards this technology; however, not all telecom operators are able to monetize it in the best possible manner. There is a pressing need for next-gen telecom software solutions that come with backward compatibility. The Need for Backward Compatibility Fiber is a next-gen technology; however, it has to exist in a universe where copper wire and DSL connectivity is still a reality. Therefore, it needs to be backward compatible. Both the network technology and billing technology need to work with pre-existing infrastructure. So, it is vital that telcos have BSS and OSS software telecom along with relevant telecom billing software that work with older technologies. Flexible Monetization is Key Fiber offers a wide range of options for monetization. There ...
Read more

Find the best backlinks list and unlimited indexing process to know for improvement

https://sites.google.com/view/callcenterusa/home https://vcallglobal.bcz.com/ http://facebookhitlist.com/profiles/blogs/top-8-benefits-for-businesses-with-outsourced-call-center http://ampicillin500.com/Blog-Detail/Top-8-Benefits-For-Businesses-with-Outsourced-Call-Center-Services-1077 https://articlesforwebsite.com/top-8-benefits-for-businesses-with-outsourced-call-center-service/ https://traiborg.com/profile/vcallglobal https://issuu.com/ameliarobert/docs/some_of_identifying_the_best_telemarketing_service https://www.slideshare.net/ameliarobert/some-of-identifying-the-best-telemarketing-service-important https://slides.com/ameliarobert/some-of-identifying-the-best-telemarketing-service-important https://www.scribd.com/document/469110266/Some-of-Identifying-the-Best-Telemarketing-Service-Important https://visual.ly/community/Infographics/business/some-ide...
Read more