How do I convert an "int" type value (including negative integers) to a "string" type value in Solidity? I suppose I could convert it into a bytes32, and then convert it to a string, but I feel that it would cost a lot of gas. What is the least expensive way to do this?


Hey there is no explicit int to string conversion in solidity. You could use a function like:

function toBytes(int x, int digits) returns (bytes b) {
    b = new bytes(digits);
    for (uint i = 0; i < digits; i++)
        b[i] = byte(uint8(uint(x));
  • Please focus on an answer for the actual question. Thanks :)
    – eth
    Jul 5 '16 at 17:22

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