palindrome function

[ex]

Sorry I forg to paste my last version"

bool isPalindrome(int num) {
    string s = text(num);
    int length = s.length;
    int limit = length / 2;
    for (int i = 0; i < limit; ++i) {
        if (s[i] != s[$ - 1 - i]) {
            return false;
        }
    }
    return true;
}