I've been working through ziglings, and in the last exercise (#107) I have to initialize a slice to a 64 character array filled with 'A's. This much is fine. The issue is that the values have to be mutable so I can read into it from a file.
I've tried this:
const content: []u8 = &[_]u8 {'A'} ** 64;
but I can't seem to generate the array as being mutable, and it errors with expected type '[]u8', but found'*const [64]u8' note: cast discards const qualifier
The only thing I've come up with that works is this mess:
var array: [64]u8 = undefined;
const content = array[0..array.len];
for (0..content.len) |i| {
content[i] = 'A';
}
But the exercise seems to imply that there's a way of doing it in one line, using the ** operator to generate the array. Does anyone know how to do this? I've looked through the previous exercises, and the documentation, but I can't figure it out.
The exercise tells you to initialize an array, not a slice.
You were close. The correct array initialization is as follows:
var content = [_]u8{'A'} ** 64;
You will also need to fix other lines in the file.