Can not use a constant to set the size of a byte array

[aguspiza]

V version: 0.1.6
OS: linux
**C compiler version: gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.11) **

What did you do?

const( Arrlen = 16)

fn test_arrconst() {
    //mut arr := [ byte(0) ; Arrlen]
    //mut arr := [16]byte
    mut arr := [Arrlen]u8
    str := tos(arr, Arrlen)
	assert str.len == Arrlen 
} 

What did you expect to see?
I expected to compile and pass the test

What did you see instead?
Compiler error:

test_arrconst
0
pass=2 fn=test_arrconst
panic: os_test.v:6
undefined: u8

[ntrel]

tos takes a byteptr, not a []byte:

pub fn tos(s byteptr, len int) string {

This code works:

    mut arr := [ byte(0) ; Arrlen]
    str := tos(arr.data, Arrlen)

//mut arr := [16]byte
//mut arr := [Arrlen]u8

See #1062 for fixed size arrays. Closing this in favour of that one as it already contains discussion.

[ntrel]

Note: Go does support using a compile-time constant for fixed-size arrays:
https://play.golang.org/p/3t1y4TzFieN

[medvednikov]

str := tos(arr.data, Arrlen)

This is a better way: str := string(arr)

tos will be made private soon, just like tos2 was.

[medvednikov]

@aguspiza Fixed.