multipleERC20Allowance method
Implementation
Future<List<BigInt>> multipleERC20Allowance(
List<String> tokens,
List<String> owners,
List<String> spenders,
) async {
assert(tokens.isNotEmpty && owners.isNotEmpty && spenders.isNotEmpty);
assert(tokens.length == owners.length && tokens.length == spenders.length);
final payload = new Iterable<int>.generate(tokens.length)
.map(
(e) => MulticallPayload.fromFunctionAbi(
tokens[e],
'function allowance(address owner, address spender) external view returns (uint256)',
[owners[e], spenders[e]],
),
)
.toList();
final res = await aggregate(payload);
return res.returnData.map((e) => BigInt.parse(e)).toList();
}