Slice to array using the same buffer?

Amit Lavon

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Feb 1, 2021, 7:38:12 AM2/1/21

to golang-nuts

I know it's possible to create a slice variable from an array with the [:] syntax, and it points to the same underlying buffer.

Can one do the opposite? Given a slice, create an array variable based on the same buffer?

Amit

Axel Wagner

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Feb 1, 2021, 7:43:35 AM2/1/21

to Amit Lavon, golang-nuts

Not yet, but probably an go 1.17: https://github.com/golang/go/issues/395

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Amit Lavon

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Feb 1, 2021, 7:55:10 AM2/1/21

to Axel Wagner, golang-nuts

Thanks! Something to look forward to.

Jan Mercl

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Feb 1, 2021, 7:55:51 AM2/1/21

to Amit Lavon, golang-nuts

On Mon, Feb 1, 2021 at 1:38 PM Amit Lavon <amitl...@gmail.com> wrote:

> I know it's possible to create a slice variable from an array with the [:] syntax, and it points to the same underlying buffer.
> Can one do the opposite? Given a slice, create an array variable based on the same buffer?

Arrays are values so they cannot share memory with other arrays/slices.

But you can create a pointer to an array that will share the memory.
Currently only using unsafe: https://play.golang.org/p/0JggbzO4ixT

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