This is the remove code from the C++ standard library.
Why do you check that it is not the same as !(*first=val) instead of (*first!==val)
Other than remove, there are many other standard libraries that write like this, is there a special reason?
template <class ForwardIterator, class T>
ForwardIterator remove (ForwardIterator first, ForwardIterator last, const T& val)
{
ForwardIterator result = first;
while (first!=last) {
if (!(*first == val)) {
*result = *first;
++result;
}
++first;
}
return result;
}
!To write = != must be implemented.
To reduce the user's work when creating a template,
== With one operation !=To handle everything
Written with !(*first == val).
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