I can't able to understand the following function in the solidity

Question

function multiowned(address[] _owners, uint _required) {
    m_numOwners = _owners.length + 1;
    m_owners[1] = uint(msg.sender);
    m_ownerIndex[uint(msg.sender)] = 1;
    for (uint i = 0; i < _owners.length; ++i)
    {
        m_owners[2 + i] = uint(_owners[i]);
        m_ownerIndex[uint(_owners[i])] = 2 + i;
    }
    m_required = _required;
}

Can anyone help me understand the above solidity code and use of m_owners[1] = uint(msg.sender); ?

Source code here https://github.com/ConsenSys/MultiSigWallet/blob/master/MultiSigWalletWithDailyLimit.sol

Answer 1

The line in question:

m_owners[1] = uint(msg.sender);

stores msg.sender at index 1 of the array m_owners. Presumably the type of m_owners is an array (or mapping) of uints rather than addresses, so msg.sender is first cast to a uint.

msg.sender is the account that called the function multiowned.