I think Rust at least twice as complex Go, and an order of magnitude is not unreasonable estimate. For example, there’s only `string` in Go. How many string types are there in Rust? Even a beginner must understand &str vs String. The concept of lifetimes I find easy, but that isn’t the case for everyone - and the ramifications of the borrow checker are often a “brick wall” for me.

Anyone who’s written Typescript or Python can pick up Go and write average quality Go code in a few days after going through the tour (https://go.dev/tour/list). 10 years ago, I did the tour and the next day wrote an animated GIF for the terminal. Everything I needed was in the standard library (yes, including GIF parsing), although I eventually used a package for color quantization.

If there’s a learning resource like the Go tour for Rust that can get me from zero to writing an animated gif player in a couple of days, I’d love to hear about it! So far I haven’t been able to make my way through the Rust book at an exciting pace.