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Nov 18th, 2018
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  1. // probably only one of mapping or list is needed
  2. address[] public addressList;
  3. mapping (address => bool) public userAddr;
  4.  
  5.  
  6. function insertAddress(address[] addressUser) public returns (bool) {
  7. require(addressList itself is not-unique or any value exists)
  8. push addressUser to addressList
  9. insert addressUser to userAddr
  10.  
  11. return true;
  12. }
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