nextTok_
char *nextTok_;
for (i = 0; nextTok_[i] != '\0'; i++) {
if (nextTok_[i] == separators[j]) {
Str rc(nextTok_, i);
nextTok_ = &(nextTok_[i+1]);
remainder = nextTok_;
remainder = nextTok_;
nextTok_ = str_;
nextTok_ = str_ + (rhs.nextTok_ - rhs.str_);
nextTok_ = str_;