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std::ranges::enumerate_view::iterator::operator++,--,+=,-=(3) | C++ Standard Libary | std::ranges::enumerate_view::iterator::operator++,--,+=,-=(3) |
NAME¶
std::ranges::enumerate_view::iterator::operator++,--,+=,-= - std::ranges::enumerate_view::iterator::operator++,--,+=,-=
Synopsis¶
constexpr /*iterator*/& operator++(); (1) (since
C++23)
constexpr void operator++( int ); (2) (since C++23)
constexpr /*iterator*/ operator++( int ) (3) (since C++23)
requires ranges::forward_range<Base>;
constexpr /*iterator*/& operator--() (4) (since C++23)
requires ranges::bidirectional_range<Base>;
constexpr /*iterator*/ operator--( int ) (5) (since C++23)
requires ranges::bidirectional_range<Base>;
constexpr /*iterator*/& operator+=( difference_type n ) (6) (since
C++23)
requires ranges::random_access_range<Base>;
constexpr /*iterator*/& operator-=( difference_type n ) (7) (since
C++23)
requires ranges::random_access_range<Base>;
Increments or decrements the iterator.
Let current_ be the underlying iterator and pos_ be the underlying index.
1) Equivalent to ++current_; ++pos_; return *this;
2) Equivalent to ++current_;
3) Equivalent to auto tmp = *this; ++*this; return tmp;
4) Equivalent to --current_; --pos_; return *this;
5) Equivalent to auto tmp = *this; --*this; return tmp;
6) Equivalent to current_ += n; pos_ += n; return *this;
7) Equivalent to current_ -= n; pos_ -= n; return *this;
Parameters¶
n - position relative to current location
Return value¶
1,4,6,7) *this
2) (none)
3,5) a copy of *this that was made before the change
See also¶
operator+ performs iterator arithmetic
operator- (function)
(C++23)
2024.06.10 | http://cppreference.com |