Casting bytes array to str

[TomAFrench]

Discussed in https://github.com/orgs/noir-lang/discussions/3962

^{Originally posted by LHerskind January 5, 2024}

Problem

It is currently supported to go from str<n> to [u8; n] but not the other way around.

For anything string-based it would be useful to allow going back to str to not confuse it with bytes.

This is particularly useful for contracts where we wish to return a string, but have a compressed variant stored. Casting to str would allow us to have the decoder know that it is a string returned and not just bytes

Happy Case

fn convert_to_str(byts: [u8; N]) -> str<N> {
    str::from_bytes(byts)
}

Alternatives Considered

No response

Additional Context

No response

Would you like to submit a PR for this Issue?

No

Support Needs

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