本篇内容主要讲解“solidity的twoarray怎么使用”,感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷,实用性强。下面就让小编来带大家学习“solidity的twoarray怎么使用”吧!
二维数组定义
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uint[2][3] grade = [[60,80],[40,20],[50,50]];
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返回二维数组
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function getGrade() view public returns(uint[2][3]){
return grade; }
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获取二维数组长度
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function getLength() view public returns(uint){
return grade.length; }
function getLength3() view public returns(uint){
return grade[0].length; }
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改变内容
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function changeContent() public {
grade[0][1] = 100;
// grade.push(ericGrade); // grade[0][2]=90; }
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完整代码演示
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pragma solidity ^0.4.23;
contract twoArray{
uint[2] ericGrade = [40,20];
uint[2][3] grade = [[60,80],[40,20],[50,50]];
function getGrade() view public returns(uint[2][3]){
return grade; }
function getLength() view public returns(uint){
return grade.length; }
function getLength3() view public returns(uint){
return grade[0].length; }
function changeContent() public {
grade[0][1] = 100;
}
function add() view public returns(uint){ uint sum = 0; for(uint i = 0;i<3;i++){ for(uint j = 0;j<2;j++){ sum+= grade[i][j]; } } return sum; }
}
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