# Gas消耗统计

**Published by:** [point](https://paragraph.com/@point/)
**Published on:** 2022-05-03
**URL:** https://paragraph.com/@point/gas

## Content

对常规操作的gas消耗有个概念，不求网上的精确计算，只是有个基础的概念 统计完之后感觉极度不准空函数, 21186 gas// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; contract TestMap{ function set1() external {} } 加变量一个变量，408 gas function set1(uint8 a) external {} 两个变量，721 gas 一个bytes[] memory 2196 gas 一个bytes[] calldata 1030 gas 一个uint[] calldata 750 gas 函数内部执行操作function set1() pure external { uint a=1+1;//13 gas } 换成uint a=10324132421421424+143214214;gas费用相同 //赋值storage，22114 gas uint a; function set1() external { a=10324132421421424; } //在增加个address成员地址 22167 gas //storage变量的计算，2307 gas uint a=1; function set1() view external { uint c=a+1; } 操作map22192 gas mapping(uint=> uint) public resultMap; function set1() external { resultMap[1]=2; } 转账ethtransfer/call 9380 gas 不是说好的固定2300么 function set1(address to) payable external { payable(to).transfer(msg.value); } call 9586 gas 调用别的contract的函数 4493 gaskeccak256+abi.encode 863 gas 根据内容多少gas变化

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