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The author may be interested in Zig, where allocators are first-class components of the system.

https://ziglang.org/documentation/0.9.1/#Choosing-an-Allocat...

There is even an arena allocator provided (amongst others) by the std lib.

You may also be interested in this comment thread from the article page, where the author explains his opinion on Zig's approach to allocators:

https://www.rfleury.com/p/untangling-lifetimes-the-arena-all...

I don't use zig, but it seems to me that functions can choose exactly which type of allocator they want to accept (just by changing the type of the allocator parameter), making his point invalid.

Reply on news.ycombinator.com