size()!=0 -> !empty()
size()!=0 -> !empty()

chriseth/solidity,ethers/solidity,ruchevits/solidity,LefterisJP/solidity,ruchevits/solidity,shahankhatch/solidity,debris/solidity,LianaHus/solidity,vaporry/solidity,arkpar/solidity,chriseth/solidity-doc-test,gluk256/solidity,ruchevits/solidity,ruchevits/solidity,douglas-larocca/solidity