Solidity將uint連接成一個字元串？

如何使用solidity將整數連接成字元串？

例如，假設我有以下內容：

uint myInteger = 12

如何創建以下字元串"My integer is: 12"，其中 12 是 myInteger 的值。

換句話說，"My integer is: " + myInteger

嘗試以下操作：

pragma solidity ^0.4.4;

contract TestIntToString {

   string public result;

   function TestIntToString() {
       // result = uintToString(12345678901234567890);
       result = appendUintToString("My integer is: ", 1234567890);
   }

   function uintToString(uint v) constant returns (string str) {
       uint maxlength = 100;
       bytes memory reversed = new bytes(maxlength);
       uint i = 0;
       while (v != 0) {
           uint remainder = v % 10;
           v = v / 10;
           reversed[i++] = byte(48 + remainder);
       }
       bytes memory s = new bytes(i);
       for (uint j = 0; j < i; j++) {
           s[j] = reversed[i - 1 - j];
       }
       str = string(s);
   }

   function appendUintToString(string inStr, uint v) constant returns (string str) {
       uint maxlength = 100;
       bytes memory reversed = new bytes(maxlength);
       uint i = 0;
       while (v != 0) {
           uint remainder = v % 10;
           v = v / 10;
           reversed[i++] = byte(48 + remainder);
       }
       bytes memory inStrb = bytes(inStr);
       bytes memory s = new bytes(inStrb.length + i);
       uint j;
       for (j = 0; j < inStrb.length; j++) {
           s[j] = inStrb[j];
       }
       for (j = 0; j < i; j++) {
           s[j + inStrb.length] = reversed[i - 1 - j];
       }
       str = string(s);
   }
}

這是顯示此算法工作原理的 Browser Solidity 螢幕：

引用自：https://ethereum.stackexchange.com/questions/10811