foreach ([element_type] value; array) {

}

This loops over the members of ‹array›. For each iteration, it copies the current member to ‹value› and then executes ‹statement›. For example:

int an_array[] = {1, 2}
foreach (int num; an_array) {
    printf("%d", num);
}

The second form lets you specify an enumeration variable:

foreach (index, value; array) statement;
foreach (int index; element_type value; array) statement;

For each iteration, this form assigns the current position in the array to ‹index›, copies the current member to ‹value›, and executes ‹statement›. For example:

string days[] = { "Mon", "Tue", "Wed", "Thu", "Fri" }
foreach (int i; string name; days) {
    printf("Day number %d is %s", i, name);
}

This is similar to the common Python idiom for i, x in enumerate(xs):.