Rust is adding a new type for pointers to data that can't move! https://github.com/withoutboats/rfcs/blob/pin-and-move/text/0000-pin.md
This is useful in lots of situations: dealing with FFI/GC in other language runtimes, self references, amongst others.
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Today I learnt about clippy::clone_on_ref_ptr, which complains about t.clone() on a Rc<Thing>. You write Rc::clone(t) instead, so it's obvious it's a cheap clone.
It's a nice approach, because it makes the expensive clones more obvious.
It's funny how languages can offer multiple forms of syntax, but formatters standardise to a single form.
E.g. single vs double quotes in JS, optional semicolons in JS, different ways of grouping imports in Rust.
Should new languages be more syntactically opinionated?
Rust and RISC-V both feel like they've reached critical mass and I'd guess that they'll be used more in 5 years than they are today.
What other technologies fit this description?