ensure_modifier

To measure whether the time limit has been exceeded

(uint deadline) ⇒ true or false

deadline = 946684800

Screen Shot 2022-06-29 at 13.30.12.png

block.timestamp = 1656477111

block.timestamp (uint): current block timestamp in seconds since Unix epoch

Screen Shot 2022-06-29 at 13.32.04.png

⇒ reverted false

modifier ensure(uint deadline) {
        require(deadline >= block.timestamp, 'UniswapV2Router: EXPIRED');
        _; // execute function 
    }