Can't init array with uint8 type

Question

I try to init array with the following expression:

const a: array[3, uint8] = [1, 2, 3]
echo repr(a)

Compiler output:

Error: type mismatch: got <array[0..2, int]> but expected 'array[0..2, uint8]'

Is there a conventional way to do it?

Answer 1

You are initializing an uint8[] with an int[] expression. In order to initialize it properly, you need to use compatible literals.

For example:

const a: array[3, uint8] = [1'u8, 2, 3]

By marking the initial element of an array expression as an uint8 using the 'u8 suffix, you make the whole array expression an uint8[].