IERC20Partial
Author: Axicon Labs Limited
Does not include return values as certain tokens such as USDT fail to implement them.
Since the return value is not expected, this interface works with both compliant and non-compliant tokens.
Clients are recommended to consume and handle the return of negative success values.
However, we cannot productively handle a failed approval and such a situation would surely cause a revert later in execution.
In addition, no notable instances exist of tokens that both i) contain a failure case for approve and ii) return false instead of reverting.
Functions
balanceOf
Returns the amount of tokens owned by account.
This function is unchanged from the EIP.
function balanceOf(address account) external view returns (uint256);
Parameters
| Name | Type | Description |
|---|---|---|
account | address | The address to query the balance of |
Returns
| Name | Type | Description |
|---|---|---|
<none> | uint256 | The amount of tokens owned by account |
approve
Sets amount as the allowance of spender over the caller's tokens.
While this function is specified to return a boolean value in the EIP, this interface does not expect one.
function approve(address spender, uint256 amount) external;
Parameters
| Name | Type | Description |
|---|---|---|
spender | address | The address which will spend the funds |
amount | uint256 | The amount of tokens allowed to be spent |
transfer
Transfers tokens from the caller to another user.
function transfer(address to, uint256 amount) external;
Parameters
| Name | Type | Description |
|---|---|---|
to | address | The user to transfer tokens to |
amount | uint256 | The amount of tokens to transfer |
totalSupply
Returns the amount of tokens in existence.
function totalSupply() external view returns (uint256);