TestERC20.sol
Methods
allowance(address,address)
function allowance(address owner, address spender) external view returns (uint256)
See {IERC20-allowance}.
Parameters
Name | Type | Description |
---|---|---|
owner | address | undefined |
spender | address | undefined |
Returns
Name | Type | Description |
---|---|---|
_0 | uint256 | undefined |
approve(address,uint256)
function approve(address spender, uint256 amount) external nonpayable returns (bool)
See {IERC20-approve}. NOTE: If amount
is the maximum uint256
, the allowance is not updated on transferFrom
. This is semantically equivalent to an infinite approval. Requirements: - spender
cannot be the zero address.
Parameters
Name | Type | Description |
---|---|---|
spender | address | undefined |
amount | uint256 | undefined |
Returns
Name | Type | Description |
---|---|---|
_0 | bool | undefined |
balanceOf(address)
function balanceOf(address account) external view returns (uint256)
See {IERC20-balanceOf}.
Parameters
Name | Type | Description |
---|---|---|
account | address | undefined |
Returns
Name | Type | Description |
---|---|---|
_0 | uint256 | undefined |
decimals()
function decimals() external view returns (uint8)
Returns the number of decimals used to get its user representation. For example, if decimals
equals 2
, a balance of 505
tokens should be displayed to a user as 5.05
(505 / 10 ** 2
). Tokens usually opt for a value of 18, imitating the relationship between Ether and Wei. This is the default value returned by this function, unless it's overridden. NOTE: This information is only used for display purposes: it in no way affects any of the arithmetic of the contract, including {IERC20-balanceOf} and {IERC20-transfer}.
Returns
Name | Type | Description |
---|---|---|
_0 | uint8 | undefined |
decreaseAllowance(address,uint256)
function decreaseAllowance(address spender, uint256 subtractedValue) external nonpayable returns (bool)
Atomically decreases the allowance granted to spender
by the caller. This is an alternative to {approve} that can be used as a mitigation for problems described in {IERC20-approve}. Emits an {Approval} event indicating the updated allowance. Requirements: - spender
cannot be the zero address. - spender
must have allowance for the caller of at least subtractedValue
.
Parameters
Name | Type | Description |
---|---|---|
spender | address | undefined |
subtractedValue | uint256 | undefined |
Returns
Name | Type | Description |
---|---|---|
_0 | bool | undefined |
increaseAllowance(address,uint256)
function increaseAllowance(address spender, uint256 addedValue) external nonpayable returns (bool)
Atomically increases the allowance granted to spender
by the caller. This is an alternative to {approve} that can be used as a mitigation for problems described in {IERC20-approve}. Emits an {Approval} event indicating the updated allowance. Requirements: - spender
cannot be the zero address.
Parameters
Name | Type | Description |
---|---|---|
spender | address | undefined |
addedValue | uint256 | undefined |
Returns
Name | Type | Description |
---|---|---|
_0 | bool | undefined |
mint(address,uint256)
function mint(address to, uint256 amount) external nonpayable
Parameters
Name | Type | Description |
---|---|---|
to | address | undefined |
amount | uint256 | undefined |
name()
function name() external view returns (string)
Returns the name of the token.
Returns
Name | Type | Description |
---|---|---|
_0 | string | undefined |
owner()
function owner() external view returns (address)
Returns
Name | Type | Description |
---|---|---|
_0 | address | undefined |
symbol()
function symbol() external view returns (string)
Returns the symbol of the token, usually a shorter version of the name.
Returns
Name | Type | Description |
---|---|---|
_0 | string | undefined |
totalSupply()
function totalSupply() external view returns (uint256)
See {IERC20-totalSupply}.
Returns
Name | Type | Description |
---|---|---|
_0 | uint256 | undefined |
transfer(address,uint256)
function transfer(address to, uint256 amount) external nonpayable returns (bool)
See {IERC20-transfer}. Requirements: - to
cannot be the zero address. - the caller must have a balance of at least amount
.
Parameters
Name | Type | Description |
---|---|---|
to | address | undefined |
amount | uint256 | undefined |
Returns
Name | Type | Description |
---|---|---|
_0 | bool | undefined |
transferFrom(address,address,uint256)
function transferFrom(address from, address to, uint256 amount) external nonpayable returns (bool)
See {IERC20-transferFrom}. Emits an {Approval} event indicating the updated allowance. This is not required by the EIP. See the note at the beginning of {ERC20}. NOTE: Does not update the allowance if the current allowance is the maximum uint256
. Requirements: - from
and to
cannot be the zero address. - from
must have a balance of at least amount
. - the caller must have allowance for from
's tokens of at least amount
.
Parameters
Name | Type | Description |
---|---|---|
from | address | undefined |
to | address | undefined |
amount | uint256 | undefined |
Returns
Name | Type | Description |
---|---|---|
_0 | bool | undefined |
Events
Approval
event Approval(address indexed owner, address indexed spender, uint256 value)
Parameters
Name | Type | Description |
---|---|---|
owner indexed | address | undefined |
spender indexed | address | undefined |
value | uint256 | undefined |
Transfer
event Transfer(address indexed from, address indexed to, uint256 value)
Parameters
Name | Type | Description |
---|---|---|
from indexed | address | undefined |
to indexed | address | undefined |
value | uint256 | undefined |