Many-item pointers test example introduces new feature without explanation

[jeramyRR]

Hi,
Thank you for this guide! it's been a joy to read so far.

I ran into a new feature in the Many-item Pointers section that doesn't have an explanation of what's going on.

test "many-item pointers" {
    var buffer: [100]u8 = [_]u8{1} ** 100;
    ...
}

What is going on with the rhs of var buffer: [100]u8 = [_]u8{1} ** 100;?

Thanks,
Jeramy

[steckes]

Yes at least a link to the section in Comptime could be given:

Comptime also introduces the operators ++ and ** for concatenating and repeating arrays and slices. These operators do not work at runtime.

https://zig.guide/master/language-basics/comptime

zig.guide/website/versioned_docs/version-0.14/01-language-basics/24-comptime.mdx

Line 81 in 7b74c41

Comptime also introduces the operators `++` and `**` for concatenating and