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Flash Loans

Overview

Since the Vault holds all tokens for all pools, the consolidated token balances are available as Flash Loans.

Example Code

pragma solidity ^0.7.0;
import "@balancer-labs/v2-vault/contracts/interfaces/IVault.sol";
import "@balancer-labs/v2-vault/contracts/interfaces/IFlashLoanRecipient.sol";
contract FlashLoanRecipient is IFlashLoanRecipient {
IVault private constant vault = "0xBA12222222228d8Ba445958a75a0704d566BF2C8";
function makeFlashLoan(
IERC20[] memory tokens,
uint256[] memory amounts,
bytes memory userData
) external {
vault.flashLoan(this, tokens, amounts, userData);
}
function receiveFlashLoan(
IERC20[] memory tokens,
uint256[] memory amounts,
uint256[] memory feeAmounts,
bytes memory userData
) external override {
require(msg.sender == vault);
...
}
}
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