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See {IERC20-allowance}.
See {IERC20-approve}. Requirements: - spender
cannot be the zero address.
See {IERC20-balanceOf}.
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 value {ERC20} uses, unless {_setupDecimals} is called. 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}.
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
.
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.
Returns the name of the token.
Returns the symbol of the token, usually a shorter version of the name.
See {IERC20-totalSupply}.
See {IERC20-transfer}. Requirements: - recipient
cannot be the zero address. - the caller must have a balance of at least amount
.
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}. Requirements: - sender
and recipient
cannot be the zero address. - sender
must have a balance of at least amount
. - the caller must have allowance for sender
's tokens of at least amount
.
owner
address
undefined
spender
address
undefined
_0
uint256
undefined
spender
address
undefined
amount
uint256
undefined
_0
bool
undefined
account
address
undefined
_0
uint256
undefined
_0
uint8
undefined
spender
address
undefined
subtractedValue
uint256
undefined
_0
bool
undefined
spender
address
undefined
addedValue
uint256
undefined
_0
bool
undefined
to
address
undefined
amount
uint256
undefined
_0
string
undefined
_0
string
undefined
_0
uint256
undefined
recipient
address
undefined
amount
uint256
undefined
_0
bool
undefined
sender
address
undefined
recipient
address
undefined
amount
uint256
undefined
_0
bool
undefined
owner indexed
address
undefined
spender indexed
address
undefined
value
uint256
undefined
from indexed
address
undefined
to indexed
address
undefined
value
uint256
undefined