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> there's not compiled machine code that does a jump
It's more of an implementation detail, but the Ruby VM actually does a jump if all the cases are "keyable"(typically integers, strings, symbols, etc). It does a hash lookup and jump to the returning address.
https://github.com/ruby/ruby/blob/92466e440d459cd21e89f8bfbe...
May I recommend to anyone facing similar issues and who may have at least some agency in dealing with the problem (can't assume you do, so forgive me in that case) the incredible work of Victor Shepelev with Ruby References: https://rubyreferences.github.io/rubychanges/evolution.html
The site presents evolutions of Ruby since version 2.0 in an editorialized and well-written categorized release journal called "Ruby Evolution": https://rubyreferences.github.io/rubychanges/evolution.html
There's also individual version releases annotated as well, for example for the recent Ruby 3.2: https://rubyreferences.github.io/rubychanges/3.2.html
Note that these are not copies of the NEWS.md typically released when minor and major versions of Ruby come out. Victor specifically spent time to write more descriptive notes of what each notable change occurred over time. It's an incredible resource and we're extremely lucky to have him in our community.
There's even a changelog for this meta-changelog, which makes my little Keep a Changelog heart sing, so you can see evolutions of this site over time as well: https://rubyreferences.github.io/rubychanges/
Here's the library: https://github.com/mboeh/toe_tag
It's a decade old and less than 100 lines so it might be more useful as an example than a gem. The last time I needed to do something like this I just rewrote the parts I needed. The ecosystem is just generally better about exceptions than it used to be, too.
Just a style thing. I find it less visually overwhelming when every statement that contributes a true/false is visually contiguous. You can see it in context here if curious: https://github.com/okeeblow/DistorteD/blob/NEW%E2%80%85SENSA...