allowance method
The optional atBlock
parameter can be used to view historical data. When
set, the function will be evaluated in the specified block. By default, the
latest on-chain block will be used.
Implementation
Future<BigInt> allowance(
_i1.EthereumAddress owner, _i1.EthereumAddress spender,
{_i1.BlockNum? atBlock}) async {
final function = self.abi.functions[2];
assert(checkSignature(function, 'dd62ed3e'));
final params = [owner, spender];
final response = await read(function, params, atBlock);
return (response[0] as BigInt);
}