std::ranges::concat_view<Views...>::iterator<Const>::operator++,--,+=,-=

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< cpp‎ | ranges‎ | concat view‎ | iterator
 
 
Ranges library
Range adaptors
 
 
constexpr /*iterator*/& operator++();
(1) (since C++26)
constexpr void operator++( int );
(2) (since C++26)
constexpr /*iterator*/ operator++( int )
    requires /*all-forward*/<Const, Views...>;
(3) (since C++26)
constexpr /*iterator*/& operator--()
    requires /*concat-is-bidirectional*/<Const, Views...>;
(4) (since C++26)
constexpr /*iterator*/ operator--( int )
    requires /*concat-is-bidirectional*/<Const, Views...>;
(5) (since C++26)
constexpr /*iterator*/& operator+=( difference_type n )
    requires /*concat-is-random-access*/<Const, Views...>;
(6) (since C++26)
constexpr /*iterator*/& operator-=( difference_type n )
    requires /*concat-is-random-access*/<Const, Views...>;
(7) (since C++26)

Increments or decrements the iterator.

 Overload  Equivalent to
 (let I be it_ .index()) 
(1) ++get-iter <I>(); satisfy <I>(); return *this;
(2) ++*this;
(3) auto tmp = *this; ++*this; return tmp;
(4) prev <I>(); return *this;
(5) auto tmp = *this; --*this; return tmp;
(6)

auto offset = get-iter <I>() - get-begin <I>();
if (n > 0)
    advance-fwd <I>(offset, n);
else if (n < 0)
    advance-bwd <I>(offset, -n);
return *this;

(7) *this += -n; return *this;

If it_ .valueless_by_exception() is true, the behavior is undefined.

Parameters

n - position relative to current location

Return value

As described above.

Example