Library in Solidity

[stevegee1]

Thanks for the explanation of Library in the video. I went further to solidity-by-example.org to feel comfortable with the new knowledge but it seems unclear. My question is, we agreed the functions in the library stay INTERNAL but looking at this code snippet I feel I am missing something:

library Array {
    function remove(uint[] storage arr, uint index) PUBLIC {
        // Move the last element into the place to delete
        require(arr.length > 0, "Can't remove from empty array");
        arr[index] = arr[arr.length - 1];
        arr.pop();
    }
}

What am I missing guys? @PatrickAlphaC

[PatrickAlphaC]

A library is embedded into the contract if all library functions are internal.

You can have a library with external or public functions, it just can't be embedded (be a part of) the contract.

[stevegee1]

Thanks