swapTokensForExactTokens

This method swaps an amount of one ERC20 tokens (_token0) for an exact amount of another one (_token1).

Function

function swapTokensForExactTokens(
    address _to,
    address _token0,
    address _token1,
    uint _amount1Out,
    uint _amount0InMax,
    uint _deadline
  ) external returns (uint);

Parameters

Parameter	Description
_to	The address of the recipient.
_token0	An ERC20 token address.
_token1	An ERC20 token address.
_amount1Out	The amount of _token1 that one wants to receive.
_amount0InMax	The maximal amount of _token0 that the user is willing to trade for a given amount of _amount1Out
_deadline	The UTC timestamp that if reached, causes the swap transaction to fail automatically.

Return values

Value	Description
uint _val	The amount of _token0.