rust-playground VS JS Bin

That would be true if you used `Vec::clear` too, it doesn't allocate a new vector. My point was that you still end up running Drop implementations with RepeatedField, just not all at once. See https://play.rust-lang.org/?version=stable&mode=debug&editio...

That's a valid Unix path, but rust's quoting does nothing to stop it: https://play.rust-lang.org/?version=stable&mode=debug&editio...

Self-referential structs work fine in Rust and always have.

https://play.rust-lang.org/?version=stable&mode=debug&editio...

The compiler will correctly prevent you from moving the value.

The other way to have a struct that starts out as non-self-referential and then becomes self-referential can be achieved with `unsafe` and `Pin::new_unchecked`, which is how `async {}` is handled.

In rust as currently stands: https://play.rust-lang.org/?version=stable&mode=debug&editio...

On the other hand, both this wrapper and yours are counterproductive if the element size is dynamic (e.g. perhaps you're dealing with some nonsense like:)

    struct ITableColumn {

Overflow checks turn into two's compliments' wrapping, but that's only considered acceptable because bounds checks are not turned off.

https://play.rust-lang.org/?version=stable&mode=release&edit...

I have no idea what you're talking about, but it sounds unnecessarily complicated and why I don't use Rust for any serious work.

This demonstrates the ABA problem in safe Rust: https://play.rust-lang.org/?version=stable&mode=debug&editio...

Substitute the sleep with a combination of doing computation/work and the OS thread scheduler, and you can see how the bug surfaces.

You can also try Rust online using the Rust playground: https://play.rust-lang.org/

(Click ... beside build to get assembly) https://play.rust-lang.org/?version=stable&mode=release&edit...

Unfortunately the go playground doesn't seem to support emitting assembly?

Rust isn't a fully functional language, but the functional features play well with the lifetime system and are optimized well.

(Rust playground example: https://play.rust-lang.org/?version=stable&mode=debug&editio...)

JS Bin is one of the useful JavaScript debugging tools designed for developers working with HTML, CSS, and JavaScript. It gives them the opportunity to test and debug their code snippets in a real-world setting. The fact that this tool is open-source is fantastic.

If I paste both in jsbin.com, the both show all content on 1 line.

A running example in https://jsbin.com/ might be easier to help with

JSBin : Front end playground, Output is not framed, so it allows you to share those snippets that will break inside an iframe.

> What if you want introduce some diagramming or Latex rendering in your blog ?

Then you are starting to step beyond what I was referring to as “a simple blog” (text, formatting, maybe some pictures or SVG).

Though there are options that don't require a CI/CD pipeline. Depending on what Latext you need MathJax may do the trick (just include the JS in your standard page header, and drop the Latex code straight in inline where needed as per their standard example: https://jsbin.com/?html,output. There are similar charting options like mermaid too. I don't know of inline charting options off the top of my head but I expect several exist.

Post your code on codesandbox.io or jsitor.com or jsbin.com or jsfiddle.net or whatever other site you prefer. Then we can look at it and see what is wrong. Otherwise, it's like showing us a picture of your cat and asking whether we think you might be allergic to it.

Important note: do not perform tests with WeakRefs in dev tools. Your objects won't be GCed in it due to DevTools specific behaviour. Instead, use jsbin, codesandbox, runkit or perform tests in Node.js. Localhost is okay when you open files using http:// protocol, as file:// also has specific behaviour.

https://jsbin.com/ (Type in the code; press go)