EIP20NonStandardInterface (EIP20NonStandardInterface.sol)
View Source: contracts/EIP20NonStandardInterface.sol
Version of ERC20 with no return values for transfer
and transferFrom
See https://medium.com/coinmonks/missing-return-value-bug-at-least-130-tokens-affected-d67bf08521ca
Contract Members
Constants & Variables
uint256 public totalSupply;
Events
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
Functions
balanceOf(address _owner)
transfer(address _to, uint256 _value)
transferFrom(address _from, address _to, uint256 _value)
approve(address _spender, uint256 _value)
allowance(address _owner, address _spender)
balanceOf
function balanceOf(address _owner) public view
returns(balance uint256)
Returns
The balance
Arguments
Name
Type
Description
_owner
address
The address from which the balance will be retrieved
transfer
send _value
token to _to
from msg.sender
function transfer(address _to, uint256 _value) public nonpayable
Returns
Whether the transfer was successful or not
Arguments
Name
Type
Description
_to
address
The address of the recipient
_value
uint256
The amount of token to be transferred
transferFrom
send _value
token to _to
from _from
on the condition it is approved by _from
function transferFrom(address _from, address _to, uint256 _value) public nonpayable
Returns
Whether the transfer was successful or not
Arguments
Name
Type
Description
_from
address
The address of the sender
_to
address
The address of the recipient
_value
uint256
The amount of token to be transferred
approve
msg.sender
approves _spender
to spend _value
tokens
function approve(address _spender, uint256 _value) public nonpayable
returns(success bool)
Returns
Whether the approval was successful or not
Arguments
Name
Type
Description
_spender
address
The address of the account able to transfer the tokens
_value
uint256
The amount of tokens to be approved for transfer
allowance
function allowance(address _owner, address _spender) public view
returns(remaining uint256)
Returns
Amount of remaining tokens allowed to spent
Arguments
Name
Type
Description
_owner
address
The address of the account owning tokens
_spender
address
The address of the account able to transfer the tokens
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