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调用swapExactTokensForTokens如何节约gas

 2 years ago
source link: https://learnblockchain.cn/question/2999
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调用swapExactTokensForTokens如何节约gas 

function buy(uint amountIn,uint amountOut,address token_address) external isOwner{   
        address[] memory path = new address[](2);
        path[0] = address(0xae13d989daC2f0dEbFf460aC112a837C89BAa7cd); 
        path[1] = address(token_address);         
        Irouter(0x9Ac64Cc6e4415144C455BD8E4837Fea55603e5c3).swapExactTokensForTokens(amountIn,amountOut,path,address(this),block.timestamp+15);    
    }

这是我写的购买token的函数,调用时要花费13万gas,但我观察到像1inch的交换只花费了11万gas,还有的合约只花费10万gas左右,这里还有更底层节约gas的相关方法吗,他们是如何实现节约gas的?比如调用pair合约的swap方法实现?


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