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AyDeveloper/libFor.sol

Created August 9, 2022 21:56
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libFor.sol
library arithmetic {
function add(uint _a, uint _b) returns (uint) {
return _a + _b;
}
}
contract C {
using arithmetic for uint;
uint sum;
function sumUp(uint _a) {
sum = _a.add(3);
}
}
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