00-constructor.md

Constructor

1. Checkout the exercise

git checkout exercise-00

2. Exercise

Write your code inside contracts/MultiSigWallet.sol

Complete the constructor

constructor(address[] memory _owners, uint _numConfirmationsRequired) public {

}

• Validate _owner is not empty

• Validate _numConfirmationsRequired is greater than 0

• Validate _numConfirmationsRequired is less than or equal to the number of _owners

• Set the state variables owners from the input _owners.

  • Each owner should not be the zero address
  • Validate owners are unique using the isOwner mapping

• Set the state variable numConfirmationsRequired from the input.

3. Test

Test your code

npm test

4. Solution

git checkout exercise-00-solution