std::ranges::chunk_view<V>:: iterator <Const>:: operator++,--,+=,-=

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C++
Ranges library
Range adaptors
std::ranges::chunk_view
Member functions
Classes for input_range s
Deduction guides
outer-iterator
outer-iterator ::value_type
inner-iterator
constexpr /*iterator*/ & operator ++ ( ) ;
(1) (since C++23)
constexpr /*iterator*/ operator ++ ( int ) ;
(2) (since C++23)
constexpr /*iterator*/ & operator -- ( )
requires ranges:: bidirectional_range < Base > ;
(3) (since C++23)
constexpr /*iterator*/ operator -- ( int )
requires ranges:: bidirectional_range < Base > ;
(4) (since C++23)
constexpr /*iterator*/ & operator + = ( difference_type x )
requires ranges:: random_access_range < Base > ;
(5) (since C++23)
constexpr /*iterator*/ & operator - = ( difference_type x )
requires ranges:: random_access_range < Base > ;
(6) (since C++23)

Advances or decrements the iterator .

Let current_ , end_ , and n_ be the underlying data members of chunk_view::iterator .

1) Equivalent to: 
missing_ = ranges::advance(current_, n_, end_);
return *this;
Before the invocation the expression current_ ! = end_ must be true , otherwise the behavior is undefined.
2) Equivalent to: auto tmp = * this ; ++* this ; return tmp ; .
3) Equivalent to: 
ranges::advance(current_, missing_ - n_);
missing_ = 0;
return *this;
4) Equivalent to: auto tmp = * this ; --* this ; return tmp ; .
5) Equivalent to: 
if (x > 0)
{
    ranges::advance(current_, n_ * (x - 1));
    missing_ = ranges::advance(current_, n_, end_);
}
else if (x < 0)
{
    ranges::advance(current_, n_ * x + missing_);
    missing_ = 0;
}
return *this;
If x is positive, then before the invocation the expression ranges:: distance ( current_, end_ ) > n_ * ( x - 1 ) must be true (i.e., informally, the requested chunk should be "inside" the underlying sequence). If x is negative, this precondition is always met.
6) Equivalent to: return * this + = - x ; .

Parameters

x - a position relative to current location

Return value

1,3,5,6) * this
2,4) a copy of * this that was made before the change

Example

This section is incomplete
Reason: no example

See also

(C++23)
performs iterator arithmetic
(function)
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