Is there a ring buffer in standard library (0.15.1)?

[rugged patio]

The title says it

[neat raven]

https://ziglang.org/download/0.15.1/release-notes.html#Ring-Buffers
The standard library is working tirelessly to remove them.

[odd tusk]

See https://github.com/ziglang/zig/pull/24968
It's not in 0.15.1, but you can copy the code for now. Or migrate to zig master.

Or use Reader/Writer interfaces as ring buffers, like the PR suggests.