SafeERC20
function safeApprove(ERC20 _token, address _spender, uint256 _amount) internal returns (bool)
Same as a standards-compliant ERC20.approve() that never reverts (returns false). Note that this makes an external call to the token.
Parameters:
_token- ERC20_spender- address_amount- uint256
Returns:
- bool
function safeTransfer(ERC20 _token, address _to, uint256 _amount) internal returns (bool)
Same as a standards-compliant ERC20.transfer() that never reverts (returns false). Note that this makes an external call to the token.
Parameters:
_token- ERC20_to- address_amount- uint256
Returns:
- bool
function safeTransferFrom(ERC20 _token, address _from, address _to, uint256 _amount) internal returns (bool)
Same as a standards-compliant ERC20.transferFrom() that never reverts (returns false). Note that this makes an external call to the token.
Parameters:
_token- ERC20_from- address_to- address_amount- uint256
Returns:
- bool
function staticAllowance(ERC20 _token, address _owner, address _spender) internal view returns (uint256)
Static call into ERC20.allowance(). Reverts if the call fails for some reason (should never fail).
Parameters:
_token- ERC20_owner- address_spender- address
Returns:
- uint256
function staticBalanceOf(ERC20 _token, address _owner) internal view returns (uint256)
Static call into ERC20.balanceOf(). Reverts if the call fails for some reason (should never fail).
Parameters:
_token- ERC20_owner- address
Returns:
- uint256
function staticTotalSupply(ERC20 _token) internal view returns (uint256)
Static call into ERC20.totalSupply(). Reverts if the call fails for some reason (should never fail).
Parameters:
_token- ERC20
Returns:
- uint256
Last modified 7mo ago