T[] find(T, E)(T[] haystack, E needle)
    if (is(typeof(haystack[0] != needle) == bool))
{
    while (haystack.length > 0 && haystack[0] != needle)
    {
        haystack = haystack[1 .. $];
    }
    return haystack;
}

unittest
{
    // assert(find([1, 2, 3], "Hello"));
    assert(find([1, 2, 3], 1.0));
}