Can not convert array to string

[aguspiza]

V version: 0.1.8
OS: ubunti 16.04

What did you do?

//os_test.v
const( ARRLEN = 16)

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

What did you expect to see?
Compile and pass test

What did you see instead?
Compiler error:

pass=2 fn=`test_arrconst`
panic: os_test.v:5
Fn "tos" wrong arg #1. Expected "byte*" (s)  but got "[]byte"

[athif23]

From what I know, it's clear that you need to pass a "byteptr" type to the first argument, but you pass an array of "byteptr" instead. So, I think it's not a bug. That's just how it is.

pub fn tos(s byteptr, len int) string {
	// This should never happen.
	if isnil(s) {
		panic('tos(): nil string')
	}
	return string {
		str: s
		len: len
	}
}

[aguspiza]

So:

arr := [ byte(1), 2, 3 ]         //type []byte acording to docs
arr2 := [3]byte                  //type byteptr ??
arr3 := [ byte(0) ; 3 ]          //type []byte

arr and arr3 can not be converted to string with tos() while arr2 can.

I was trying another notation to use a const for the length of the array because of #762

[medvednikov]

string() should work with all of these. Thanks, will fix.

[ntrel]

Use arr.data. This code works:

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

string() should work with all of these

Closing this in favour of #934.

[medvednikov]

Fixed:

str := string(bytes_array)