bytes.NewBuffer that doesn't take ownership

[eager totem]

I haven't yet found such thing in the stdlib, does it even exist?

[plucky cloak]

What are you trying to do exactly?

[eager totem]

I've got a []byte slice that I need to pass somewhere, but I also have some methods that take in an io.Reader

[plucky cloak]

So you want to implement a reader on a byte slice but you don't want to copy it?

You can literally make a new type and implement reader yourself

Its like 20 lines

[queen cloak]

bytes.NewReader is what you want

[queen cloak]

a valid implementation is 20 lines, it's more like 70 when you include optimizations.
Just use bytes.NewReader

[eager totem]

oh god how did I miss that
thank you

[ebon cape]

bytes: NewReader

      func NewReader(b []byte) *Reader
    ```
NewReader returns a new Reader reading from b.