Expression type is ambiguous

[LogvinovLeon]

Aim

Getting this code to compile:

fn main() {
    let a: [u8; 10] = [1; 10];
    let b: [Field; 10] = a.map(|x| x as Field);
}

Expected Behavior

Compiles

Bug

Does not compile:

error: Expression type is ambiguous
  ┌─ /Users/leonidlogvinov/Dev/ZK/plain-repro/src/main.nr:3:36
  │
3 │     let b: [Field; 10] = a.map(|x| x as Field);
  │                                    ---------- Type must be known at this point
  │

Aborting due to 1 previous error

To Reproduce

1. Try to compile

Project Impact

Nice-to-have

Impact Context

No response

Workaround

Yes

Workaround Description

I can write a loop instead, but it's uglier & more verbose. Ideally - would like to be able to cast whole arrays

Additional Context

No response

Installation Method

Binary (noirup default)

Nargo Version

nargo version = 0.28.0

NoirJS Version

No response

Would you like to submit a PR for this Issue?

None

Support Needs

No response

[TomAFrench]

A type hint fixes this for now.

fn main() {
    let a: [u8; 10] = [1; 10];
    let b: [Field; 10] = a.map(|x: u8| x as Field);
}