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guaerjia/contracts...erc20.sol

Created August 25, 2021 02:00
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Created using remix-ide: Realtime Ethereum Contract Compiler and Runtime. Load this file by pasting this gists URL or ID at https://remix.ethereum.org/#version=soljson-v0.6.12+commit.27d51765.js&optimize=false&runs=200&gist=
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contracts...erc20.sol
pragma solidity ^0.6.0;
abstract contract ERC20 {
function totalSupply() virtual public view returns(uint totalSupply);
function balanceOf(address _owner) virtual public view returns(uint balance);
function transfer(address _to, uint _value) virtual public returns(bool success);
function transferFrom(address _from, address _to, uint _value) virtual public returns(bool success);
function approve(address _spender, uint _value) virtual public returns(bool success);
function allowance(address _owner, address _spender) virtual public view returns(uint remaining);
event Transfer(address indexed _tran, address indexed _to, uint _value);
event Approval(address indexed _owner, address indexed _spender, uint _value);
}
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