Developer note: Implementation of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by presenting a message signed by the account. By not relying on `{IERC20-approve}`, the token holder account doesn't need to send a transaction, and thus is not required to hold Ether at all. Available since v3.4.
permit(address,address,uint256,uint256,uint8,bytes32,bytes32)
public
Name | Type | Description |
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nonces(address)
view public
Name | Type | Description |
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Returns:
Name | Type | Description |
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DOMAIN_SEPARATOR()
view external
Returns:
Name | Type | Description |
---|---|---|
owner
address
spender
address
value
uint256
deadline
uint256
v
uint8
r
bytes32
s
bytes32
owner
address
[0]
uint256
[0]
bytes32