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IERC20

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Interface of the ERC20 standard as defined in the EIP.

This includes the optional name, symbol, and decimals metadata.

Functions​

totalSupply​

Returns the amount of tokens in existence.

function totalSupply() external view returns (uint256);

balanceOf​

Returns the amount of tokens owned by account.

function balanceOf(address account) external view returns (uint256);

transfer​

Moves amount tokens from the caller's account to to.

function transfer(address to, uint256 amount) external returns (bool);

allowance​

Returns the remaining number of tokens that spender is allowed to spend on behalf of owner

function allowance(address owner, address spender) external view returns (uint256);

approve​

Sets amount as the allowance of spender over the caller's tokens.

Be aware of front-running risks: https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729

function approve(address spender, uint256 amount) external returns (bool);

transferFrom​

Moves amount tokens from from to to using the allowance mechanism. amount is then deducted from the caller's allowance.

function transferFrom(address from, address to, uint256 amount) external returns (bool);

name​

Returns the name of the token.

function name() external view returns (string memory);

symbol​

Returns the symbol of the token.

function symbol() external view returns (string memory);

decimals​

Returns the decimals places of the token.

function decimals() external view returns (uint8);

Events​

Transfer​

Emitted when value tokens are moved from one account (from) to another (to).

event Transfer(address indexed from, address indexed to, uint256 value);

Approval​

Emitted when the allowance of a spender for an owner is set, where value is the new allowance.

event Approval(address indexed owner, address indexed spender, uint256 value);