Note: Please note that the code below is essentially non-sense, and just for illustration purposes.
Based on the fact that the right-hand side of an assignment must always be evaluated before it's value is assigned to the left-hand side variable, and that increment operations such as ++ and -- are always performed right after evaluation, I would not expect the following code to work:
string[] newArray1 = new[] {"1", "2", "3", "4"};
string[] newArray2 = new string[4];
int IndTmp = 0;
foreach (string TmpString in newArray1)
{
newArray2[IndTmp] = newArray1[IndTmp++];
}
Rather, I would expect newArray1[0] to be assigned to newArray2[1], newArray1[1] to newArray[2] and so on up to the point of throwing a System.IndexOutOfBoundsException . Instead, and to my great surprise, the version that throws the exception is
string[] newArray1 = new[] {"1", "2", "3", "4"};
string[] newArray2 = new string[4];
int IndTmp = 0;
foreach (string TmpString in newArray1)
{
newArray2[IndTmp++] = newArray1[IndTmp];
}
Since, in my understanding, the compiler first evaluates the RHS, assigns it to the LHS and only then increments this is to me an unexpected behaviour. Or is it really expected and I am clearly missing something?