Any one of those things you could ignore, but all of them together and its starting to be weird.
Except that Odin has been "released" and has been used to ship software for years now. Regardless of Bill's inspirations for his language, I can write code with Odin right now, and that's a huge benefit compared to waiting for Blow to finally be in the mood to release Jai.
See [1] where Bill discusses the influences and where they've diverged longer-form.
Debatably, Odin's limited success, is due to Jai not being available to more of the public.
Jai, on the other hand, arguably appeals to the same groups and circles as those that are or might be attracted to Odin. That even appears to go for their creators, where similar demographics of fans would likely choose Jonathan Blow.
Again, any one of those things on it's own is not a smoking gun, and many of these features and syntax are becoming standard in modern languages. But the fact that SO MANY of Odin's features and even it's marketing strategy seems to be copying Jon Blow is weird to me. You can still go watch Jon's videos demoing early Jai from 11 years ago...and if you check the comments you'll see a familiar ginger face, so there's no doubt Bill saw those videos when they came out, and began developing Odin AFTER he saw Jai.
If he was simply inspired by Jon that's fine, there's nothing wrong with more well-thought out programming languages in the world. But when you copy a lot of the language, copy the announcement to the announcement video, copy the announcement video, and also plan to release at the exact same time as Jai, while largely denying that Jai had any influence of your language, red flags will go off for anyone that's paying attention.
Both Odin and Zig were inspired by Jai. Both creators were in the "Handmade" community and inspired.
That being said, a ton of these concepts existed in many languages that pre-date the developement of Jai by a very large margin.
> using
Literally in C++. Common Lisp has ":use" for packages/namespaces and "with-slots" for structs. Pascal has "with". A bunch of others too.
> defer
This came from Go.
> the context system
Jonathan Blow talked about where he got this, basically using obscure SML compilers in the 90's. Jon probably got this from MLKit. This is also how some Lisps did arenas in like the 70's... Ada also has a similar feature.
> The entire concept of Odin seems to be taken from Jai. They're both aiming to be C/C++ replacements "for the joy of programming"
Except D, Nim and Haxe are probably the actual precursors.
According to Jon the biggest feature of Jai is it's macros which are basically taken from Common Lisp although languages like Haxe, D, Rust, Nim and probably others also allow execution of any arbitrary code at compile time. At a recent LambdaConf he also talked about what he called a "plugin" system for the Jai compiler which kind of sounds like how OCaml or Haskell do macros/templates.
But Odin famously eschews macros. There's a few built-in features that do things at compile time but you can't just execute any code at compile time.
> began developing Odin AFTER he saw Jai
Jon (and Casey's) videos inspired the whole "Handmade" community, for better or worse. Both Bill (Odin) and Andrew Kelley (Zig) started their respective projects because of it. Both "took" ideas from Jai. Except none of those ideas are unique. There's literally nothing in Jai another language doesn't have. Even the syntax "name :: type" seems to come from Haskell type declarations, although :: is also used for types in Fortran and it's used in Backus-Naur form.
Anyhow in the end Jon's the one who just took a bunch of pre-existing functional language features, added it to a C-like language and acted like he reinvented the wheel. He didn't.
And finally, the "joy of programming" comes from Ruby's creator Matz.
> any one of those things on it's own is not a smoking gun, and many of these features and syntax are becoming standard in modern languages. But the fact that SO MANY of Odin's features and even it's marketing strategy seems to be copying Jon Blow is weird to me.
Why did you type all those paragraphs quoting me but happen to gloss over the one that already takes your entire comment into account? I never claimed that Jon invented any of these things. My point stands regardless, the way Ginger Bill has moved regarding Jai has been weird, and this most recent announcement confirms it for me. Its a vibe thing and if you're gonna "um akshually' me about where this or that language feature originated from, then you're missing the point.
Because everyone is inspired by everyone in programming language design but Jon Blow is the only one weird about it, talking about suing people on stream for features he himself took from others...