Mutating
Algorithms
Collaboration diagram for Mutating:

## Functions

template<typename _II , typename _OI >
constexpr _OI | std::copy (_II __first, _II __last, _OI __result)
template<typename _BI1 , typename _BI2 >
constexpr _BI2 | std::copy_backward (_BI1 __first, _BI1 __last, _BI2 __result)
template<typename _InputIterator , typename _OutputIterator , typename _Predicate >
constexpr _OutputIterator | std::copy_if (_InputIterator __first, _InputIterator __last, _OutputIterator __result, _Predicate __pred)
template<typename _InputIterator , typename _Size , typename _OutputIterator >
constexpr _OutputIterator | std::copy_n (_InputIterator __first, _Size __n, _OutputIterator __result)
template<typename _ForwardIterator , typename _Tp >
constexpr void | std::fill (_ForwardIterator __first, _ForwardIterator __last, const _Tp &__value)
template<typename _OI , typename _Size , typename _Tp >
constexpr _OI | std::fill_n (_OI __first, _Size __n, const _Tp &__value)
template<typename _ForwardIterator , typename _Generator >
constexpr void | std::generate (_ForwardIterator __first, _ForwardIterator __last, _Generator __gen)
template<typename _OutputIterator , typename _Size , typename _Generator >
constexpr _OutputIterator | std::generate_n (_OutputIterator __first, _Size __n, _Generator __gen)
template<typename _InputIterator , typename _Predicate >
constexpr bool | std::is_partitioned (_InputIterator __first, _InputIterator __last, _Predicate __pred)
template<typename _ForwardIterator1 , typename _ForwardIterator2 >
constexpr void | std::iter_swap (_ForwardIterator1 __a, _ForwardIterator2 __b)
template<typename _II , typename _OI >
constexpr _OI | std::move (_II __first, _II __last, _OI __result)
template<typename _BI1 , typename _BI2 >
constexpr _BI2 | std::move_backward (_BI1 __first, _BI1 __last, _BI2 __result)
template<typename _ForwardIterator , typename _Predicate >
constexpr _ForwardIterator | std::partition (_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred)
template<typename _InputIterator , typename _OutputIterator1 , typename _OutputIterator2 , typename _Predicate >
constexpr pair< _OutputIterator1, _OutputIterator2 > | std::partition_copy (_InputIterator __first, _InputIterator __last, _OutputIterator1 __out_true, _OutputIterator2 __out_false, _Predicate __pred)
template<typename _ForwardIterator , typename _Predicate >
constexpr _ForwardIterator | std::partition_point (_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred)
template<typename _RandomAccessIterator , typename _RandomNumberGenerator >
void | std::random_shuffle (_RandomAccessIterator __first, _RandomAccessIterator __last, _RandomNumberGenerator &&__rand)
template<typename _ForwardIterator , typename _Tp >
constexpr _ForwardIterator | std::remove (_ForwardIterator __first, _ForwardIterator __last, const _Tp &__value)
template<typename _InputIterator , typename _OutputIterator , typename _Tp >
constexpr _OutputIterator | std::remove_copy (_InputIterator __first, _InputIterator __last, _OutputIterator __result, const _Tp &__value)
template<typename _InputIterator , typename _OutputIterator , typename _Predicate >
constexpr _OutputIterator | std::remove_copy_if (_InputIterator __first, _InputIterator __last, _OutputIterator __result, _Predicate __pred)
template<typename _ForwardIterator , typename _Predicate >
constexpr _ForwardIterator | std::remove_if (_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred)
template<typename _ForwardIterator , typename _Tp >
constexpr void | std::replace (_ForwardIterator __first, _ForwardIterator __last, const _Tp &__old_value, const _Tp &__new_value)
template<typename _InputIterator , typename _OutputIterator , typename _Predicate , typename _Tp >
constexpr _OutputIterator | std::replace_copy_if (_InputIterator __first, _InputIterator __last, _OutputIterator __result, _Predicate __pred, const _Tp &__new_value)
template<typename _ForwardIterator , typename _Predicate , typename _Tp >
constexpr void | std::replace_if (_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred, const _Tp &__new_value)
template<typename _BidirectionalIterator >
constexpr void | std::reverse (_BidirectionalIterator __first, _BidirectionalIterator __last)
template<typename _BidirectionalIterator , typename _OutputIterator >
constexpr _OutputIterator | std::reverse_copy (_BidirectionalIterator __first, _BidirectionalIterator __last, _OutputIterator __result)
template<typename _ForwardIterator >
constexpr _ForwardIterator | std::rotate (_ForwardIterator __first, _ForwardIterator __middle, _ForwardIterator __last)
template<typename _ForwardIterator , typename _OutputIterator >
constexpr _OutputIterator | std::rotate_copy (_ForwardIterator __first, _ForwardIterator __middle, _ForwardIterator __last, _OutputIterator __result)
template<typename _RandomAccessIterator , typename _UniformRandomNumberGenerator >
void | std::shuffle (_RandomAccessIterator __first, _RandomAccessIterator __last, _UniformRandomNumberGenerator &&__g)
template<typename _ForwardIterator , typename _Predicate >
_ForwardIterator | std::stable_partition (_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred)
template<typename _ForwardIterator1 , typename _ForwardIterator2 >
constexpr _ForwardIterator2 | std::swap_ranges (_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2)
template<typename _InputIterator , typename _OutputIterator , typename _UnaryOperation >
constexpr _OutputIterator | std::transform (_InputIterator __first, _InputIterator __last, _OutputIterator __result, _UnaryOperation __unary_op)
template<typename _InputIterator1 , typename _InputIterator2 , typename _OutputIterator , typename _BinaryOperation >
constexpr _OutputIterator | std::transform (_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _OutputIterator __result, _BinaryOperation __binary_op)
template<typename _ForwardIterator >
constexpr _ForwardIterator | std::unique (_ForwardIterator __first, _ForwardIterator __last)
template<typename _ForwardIterator , typename _BinaryPredicate >
constexpr _ForwardIterator | std::unique (_ForwardIterator __first, _ForwardIterator __last, _BinaryPredicate __binary_pred)
template<typename _InputIterator , typename _OutputIterator >
constexpr _OutputIterator | std::unique_copy (_InputIterator __first, _InputIterator __last, _OutputIterator __result)
template<typename _InputIterator , typename _OutputIterator , typename _BinaryPredicate >
constexpr _OutputIterator | std::unique_copy (_InputIterator __first, _InputIterator __last, _OutputIterator __result, _BinaryPredicate __binary_pred)

## Detailed Description

## Function Documentation

## copy()

template<typename _II , typename _OI >

constexpr _OI std::copy | ( | _II | __first,
|  | _II | __last,
|  | _OI | __result
| ) |  |

inline constexpr

Copies the range [first,last) into result.

Parameters

  __first | An input iterator.
  __last | An input iterator.
  __result | An output iterator.

Returns
  result + (last - first)

This inline function will boil down to a call to `memmove` whenever possible. Failing that, if random access iterators are passed, then the loop count will be known (and therefore a candidate for compiler optimizations such as unrolling). Result may not be contained within [first,last); the copy_backward function should be used instead.

Note that the end of the output range is permitted to be contained within [first,last).

Definition at line 611 of file stl_algobase.h.

## copy_backward()

template<typename _BI1 , typename _BI2 >

constexpr _BI2 std::copy_backward | ( | _BI1 | __first,
|  | _BI1 | __last,
|  | _BI2 | __result
| ) |  |

inline constexpr

Copies the range [first,last) into result.

Parameters

  __first | A bidirectional iterator.
  __last | A bidirectional iterator.
  __result | A bidirectional iterator.

Returns
  result - (last - first)

The function has the same effect as copy, but starts at the end of the range and works its way to the start, returning the start of the result. This inline function will boil down to a call to `memmove` whenever possible. Failing that, if random access iterators are passed, then the loop count will be known (and therefore a candidate for compiler optimizations such as unrolling).

Result may not be in the range (first,last]. Use copy instead. Note that the start of the output range may overlap [first,last).

Definition at line 848 of file stl_algobase.h.

## copy_if()

template<typename _InputIterator , typename _OutputIterator , typename _Predicate >

constexpr _OutputIterator std::copy_if | ( | _InputIterator | __first,
|  | _InputIterator | __last,
|  | _OutputIterator | __result,
|  | _Predicate | __pred
| ) |  |

constexpr

Copy the elements of a sequence for which a predicate is true.

Parameters

  __first | An input iterator.
  __last | An input iterator.
  __result | An output iterator.
  __pred | A predicate.

Returns
  An iterator designating the end of the resulting sequence.

Copies each element in the range ``[__first,__last) for which `__pred` returns true to the range beginning at `__result`.

copy_if() is stable, so the relative order of elements that are copied is unchanged.

Definition at line 688 of file stl_algo.h.

## copy_n()

template<typename _InputIterator , typename _Size , typename _OutputIterator >

constexpr _OutputIterator std::copy_n | ( | _InputIterator | __first,
|  | _Size | __n,
|  | _OutputIterator | __result
| ) |  |

inline constexpr

Copies the range [first,first+n) into [result,result+n).

Parameters

  __first | An input iterator.
  __n | The number of elements to copy.
  __result | An output iterator.

Returns
  result+n.

This inline function will boil down to a call to `memmove` whenever possible. Failing that, if random access iterators are passed, then the loop count will be known (and therefore a candidate for compiler optimizations such as unrolling).

Definition at line 743 of file stl_algo.h.

## fill()

template<typename _ForwardIterator , typename _Tp >

constexpr void std::fill | ( | _ForwardIterator | __first,
|  | _ForwardIterator | __last,
|  | const _Tp & | __value
| ) |  |

inline constexpr

Fills the range [first,last) with copies of value.

Parameters

  __first | A forward iterator.
  __last | A forward iterator.
  __value | A reference-to-const of arbitrary type.

Returns
  Nothing.

This function fills a range with copies of the same value. For char types filling contiguous areas of memory, this becomes an inline call to `memset` or `wmemset`.

Definition at line 992 of file stl_algobase.h.

## fill_n()

template<typename _OI , typename _Size , typename _Tp >

constexpr _OI std::fill_n | ( | _OI | __first,
|  | _Size | __n,
|  | const _Tp & | __value
| ) |  |

inline constexpr

Fills the range [first,first+n) with copies of value.

Parameters

  __first | An output iterator.
  __n | The count of copies to perform.
  __value | A reference-to-const of arbitrary type.

Returns
  The iterator at first+n.

This function fills a range with copies of the same value. For char types filling contiguous areas of memory, this becomes an inline call to `memset` or `wmemset`.

If `__n` is negative, the function does nothing.

Definition at line 1144 of file stl_algobase.h.

## generate()

template<typename _ForwardIterator , typename _Generator >

constexpr void std::generate | ( | _ForwardIterator | __first,
|  | _ForwardIterator | __last,
|  | _Generator | __gen
| ) |  |

constexpr

Assign the result of a function object to each value in a sequence.

Parameters

  __first | A forward iterator.
  __last | A forward iterator.
  __gen | A function object taking no arguments and returning std::iterator_traits<_ForwardIterator>::value_type

Returns
  generate() returns no value.

Performs the assignment `*i` = `__gen()` for each `i` in the range ``[__first,__last).

Definition at line 4422 of file stl_algo.h.

## generate_n()

template<typename _OutputIterator , typename _Size , typename _Generator >

constexpr _OutputIterator std::generate_n | ( | _OutputIterator | __first,
|  | _Size | __n,
|  | _Generator | __gen
| ) |  |

constexpr

Assign the result of a function object to each value in a sequence.

Parameters

  __first | A forward iterator.
  __n | The length of the sequence.
  __gen | A function object taking no arguments and returning std::iterator_traits<_ForwardIterator>::value_type

Returns
  The end of the sequence, `__first+__n`

Performs the assignment `*i` = `__gen()` for each `i` in the range ``[__first,__first+__n).

If `__n` is negative, the function does nothing and returns `__first`.

Definition at line 4456 of file stl_algo.h.

## is_partitioned()

template<typename _InputIterator , typename _Predicate >

constexpr bool std::is_partitioned | ( | _InputIterator | __first,
|  | _InputIterator | __last,
|  | _Predicate | __pred
| ) |  |

inline constexpr

Checks whether the sequence is partitioned.

Parameters

  __first | An input iterator.
  __last | An input iterator.
  __pred | A predicate.

Returns
  True if the range ``[__first,__last) is partioned by `__pred`, i.e. if all elements that satisfy `__pred` appear before those that do not.

Definition at line 530 of file stl_algo.h.

## iter_swap()

template<typename _ForwardIterator1 , typename _ForwardIterator2 >

constexpr void std::iter_swap | ( | _ForwardIterator1 | __a,
|  | _ForwardIterator2 | __b
| ) |  |

inline constexpr

Swaps the contents of two iterators.

Parameters

  __a | An iterator.
  __b | Another iterator.

Returns
  Nothing.

This function swaps the values pointed to by two iterators, not the iterators themselves.

Definition at line 152 of file stl_algobase.h.

## move()

template<typename _II , typename _OI >

constexpr _OI std::move | ( | _II | __first,
|  | _II | __last,
|  | _OI | __result
| ) |  |

inline constexpr

Moves the range [first,last) into result.

Parameters

  __first | An input iterator.
  __last | An input iterator.
  __result | An output iterator.

Returns
  result + (last - first)

This inline function will boil down to a call to `memmove` whenever possible. Failing that, if random access iterators are passed, then the loop count will be known (and therefore a candidate for compiler optimizations such as unrolling). Result may not be contained within [first,last); the move_backward function should be used instead.

Note that the end of the output range is permitted to be contained within [first,last).

Definition at line 644 of file stl_algobase.h.

## move_backward()

template<typename _BI1 , typename _BI2 >

constexpr _BI2 std::move_backward | ( | _BI1 | __first,
|  | _BI1 | __last,
|  | _BI2 | __result
| ) |  |

inline constexpr

Moves the range [first,last) into result.

Parameters

  __first | A bidirectional iterator.
  __last | A bidirectional iterator.
  __result | A bidirectional iterator.

Returns
  result - (last - first)

The function has the same effect as move, but starts at the end of the range and works its way to the start, returning the start of the result. This inline function will boil down to a call to `memmove` whenever possible. Failing that, if random access iterators are passed, then the loop count will be known (and therefore a candidate for compiler optimizations such as unrolling).

Result may not be in the range (first,last]. Use move instead. Note that the start of the output range may overlap [first,last).

Definition at line 884 of file stl_algobase.h.

## partition()

template<typename _ForwardIterator , typename _Predicate >

constexpr _ForwardIterator std::partition | ( | _ForwardIterator | __first,
|  | _ForwardIterator | __last,
|  | _Predicate | __pred
| ) |  |

inline constexpr

Move elements for which a predicate is true to the beginning of a sequence.

Parameters

  __first | A forward iterator.
  __last | A forward iterator.
  __pred | A predicate functor.

Returns
  An iterator `middle` such that `__pred(i)` is true for each iterator `i` in the range ``[__first,middle) and false for each `i` in the range ``[middle,__last).

`__pred` must not modify its operand. `partition()` does not preserve the relative ordering of elements in each group, use `stable_partition()` if this is needed.

Definition at line 4644 of file stl_algo.h.

## partition_copy()

template<typename _InputIterator , typename _OutputIterator1 , typename _OutputIterator2 , typename _Predicate >

constexpr pair<_OutputIterator1, _OutputIterator2> std::partition_copy | ( | _InputIterator | __first,
|  | _InputIterator | __last,
|  | _OutputIterator1 | __out_true,
|  | _OutputIterator2 | __out_false,
|  | _Predicate | __pred
| ) |  |

constexpr

Copy the elements of a sequence to separate output sequences depending on the truth value of a predicate.

Parameters

  __first | An input iterator.
  __last | An input iterator.
  __out_true | An output iterator.
  __out_false | An output iterator.
  __pred | A predicate.

Returns
  A pair designating the ends of the resulting sequences.

Copies each element in the range ``[__first,__last) for which `__pred` returns true to the range beginning at `out_true` and each element for which `__pred` returns false to `__out_false`.

Definition at line 780 of file stl_algo.h.

## partition_point()

template<typename _ForwardIterator , typename _Predicate >

constexpr _ForwardIterator std::partition_point | ( | _ForwardIterator | __first,
|  | _ForwardIterator | __last,
|  | _Predicate | __pred
| ) |  |

constexpr

Find the partition point of a partitioned range.

Parameters

  __first | An iterator.
  __last | Another iterator.
  __pred | A predicate.

Returns
  An iterator `mid` such that `all_of(__first, mid, __pred)` and `none_of(mid, __last, __pred)` are both true.

Definition at line 552 of file stl_algo.h.

## random_shuffle()

template<typename _RandomAccessIterator , typename _RandomNumberGenerator >

void std::random_shuffle | ( | _RandomAccessIterator | __first,
|  | _RandomAccessIterator | __last,
|  | _RandomNumberGenerator && | __rand
| ) |  |

Shuffle the elements of a sequence using a random number generator.

Parameters

  __first | A forward iterator.
  __last | A forward iterator.
  __rand | The RNG functor or function.

Returns
  Nothing.

Reorders the elements in the range ``[__first,__last) using `__rand` to provide a random distribution. Calling `__rand(N)` for a positive integer `N` should return a randomly chosen integer from the range [0,N).

Definition at line 4603 of file stl_algo.h.

## remove()

template<typename _ForwardIterator , typename _Tp >

constexpr _ForwardIterator std::remove | ( | _ForwardIterator | __first,
|  | _ForwardIterator | __last,
|  | const _Tp & | __value
| ) |  |

inline constexpr

Remove elements from a sequence.

Parameters

  __first | An input iterator.
  __last | An input iterator.
  __value | The value to be removed.

Returns
  An iterator designating the end of the resulting sequence.

All elements equal to `__value` are removed from the range ``[__first,__last).

remove() is stable, so the relative order of elements that are not removed is unchanged.

Elements between the end of the resulting sequence and `__last` are still present, but their value is unspecified.

Definition at line 850 of file stl_algo.h.

## remove_copy()

template<typename _InputIterator , typename _OutputIterator , typename _Tp >

constexpr _OutputIterator std::remove_copy | ( | _InputIterator | __first,
|  | _InputIterator | __last,
|  | _OutputIterator | __result,
|  | const _Tp & | __value
| ) |  |

inline constexpr

Copy a sequence, removing elements of a given value.

Parameters

  __first | An input iterator.
  __last | An input iterator.
  __result | An output iterator.
  __value | The value to be removed.

Returns
  An iterator designating the end of the resulting sequence.

Copies each element in the range ``[__first,__last) not equal to `__value` to the range beginning at `__result`. remove_copy() is stable, so the relative order of elements that are copied is unchanged.

Definition at line 619 of file stl_algo.h.

## remove_copy_if()

template<typename _InputIterator , typename _OutputIterator , typename _Predicate >

constexpr _OutputIterator std::remove_copy_if | ( | _InputIterator | __first,
|  | _InputIterator | __last,
|  | _OutputIterator | __result,
|  | _Predicate | __pred
| ) |  |

inline constexpr

Copy a sequence, removing elements for which a predicate is true.

Parameters

  __first | An input iterator.
  __last | An input iterator.
  __result | An output iterator.
  __pred | A predicate.

Returns
  An iterator designating the end of the resulting sequence.

Copies each element in the range ``[__first,__last) for which `__pred` returns false to the range beginning at `__result`.

remove_copy_if() is stable, so the relative order of elements that are copied is unchanged.

Definition at line 653 of file stl_algo.h.

## remove_if()

template<typename _ForwardIterator , typename _Predicate >

constexpr _ForwardIterator std::remove_if | ( | _ForwardIterator | __first,
|  | _ForwardIterator | __last,
|  | _Predicate | __pred
| ) |  |

inline constexpr

Remove elements from a sequence using a predicate.

Parameters

  __first | A forward iterator.
  __last | A forward iterator.
  __pred | A predicate.

Returns
  An iterator designating the end of the resulting sequence.

All elements for which `__pred` returns true are removed from the range ``[__first,__last).

remove_if() is stable, so the relative order of elements that are not removed is unchanged.

Elements between the end of the resulting sequence and `__last` are still present, but their value is unspecified.

Definition at line 884 of file stl_algo.h.

## replace()

template<typename _ForwardIterator , typename _Tp >

constexpr void std::replace | ( | _ForwardIterator | __first,
|  | _ForwardIterator | __last,
|  | const _Tp & | __old_value,
|  | const _Tp & | __new_value
| ) |  |

constexpr

Replace each occurrence of one value in a sequence with another value.

Parameters

  __first | A forward iterator.
  __last | A forward iterator.
  __old_value | The value to be replaced.
  __new_value | The replacement value.

Returns
  replace() returns no value.

For each iterator `i` in the range ``[__first,__last) if `*i` == `__old_value` then the assignment `*i` = `__new_value` is performed.

Definition at line 4356 of file stl_algo.h.

## replace_copy_if()

template<typename _InputIterator , typename _OutputIterator , typename _Predicate , typename _Tp >

constexpr _OutputIterator std::replace_copy_if | ( | _InputIterator | __first,
|  | _InputIterator | __last,
|  | _OutputIterator | __result,
|  | _Predicate | __pred,
|  | const _Tp & | __new_value
| ) |  |

inline constexpr

Copy a sequence, replacing each value for which a predicate returns true with another value.

Parameters

  __first | An input iterator.
  __last | An input iterator.
  __result | An output iterator.
  __pred | A predicate.
  __new_value | The replacement value.

Returns
  The end of the output sequence, `__result+`(__last-__first).

Copies each element in the range ``[__first,__last) to the range ``[__result,__result+(__last-__first)) replacing elements for which `__pred` returns true with `__new_value`.

Definition at line 3176 of file stl_algo.h.

## replace_if()

template<typename _ForwardIterator , typename _Predicate , typename _Tp >

constexpr void std::replace_if | ( | _ForwardIterator | __first,
|  | _ForwardIterator | __last,
|  | _Predicate | __pred,
|  | const _Tp & | __new_value
| ) |  |

constexpr

Replace each value in a sequence for which a predicate returns true with another value.

Parameters

  __first | A forward iterator.
  __last | A forward iterator.
  __pred | A predicate.
  __new_value | The replacement value.

Returns
  replace_if() returns no value.

For each iterator `i` in the range ``[__first,__last) if `__pred(*i)` is true then the assignment `*i` = `__new_value` is performed.

Definition at line 4389 of file stl_algo.h.

## reverse()

template<typename _BidirectionalIterator >

constexpr void std::reverse | ( | _BidirectionalIterator | __first,
|  | _BidirectionalIterator | __last
| ) |  |

inline constexpr

Reverse a sequence.

Parameters

  __first | A bidirectional iterator.
  __last | A bidirectional iterator.

Returns
  reverse() returns no value.

Reverses the order of the elements in the range ``[__first,__last), so that the first element becomes the last etc. For every `i` such that `0<=i<=`(__last-__first)/2), `reverse()` swaps `*`(__first+i) and `*`(__last-(i+1))

Definition at line 1145 of file stl_algo.h.

## reverse_copy()

template<typename _BidirectionalIterator , typename _OutputIterator >

constexpr _OutputIterator std::reverse_copy | ( | _BidirectionalIterator | __first,
|  | _BidirectionalIterator | __last,
|  | _OutputIterator | __result
| ) |  |

constexpr

Copy a sequence, reversing its elements.

Parameters

  __first | A bidirectional iterator.
  __last | A bidirectional iterator.
  __result | An output iterator.

Returns
  An iterator designating the end of the resulting sequence.

Copies the elements in the range ``[__first,__last) to the range ``[__result,__result+(__last-__first)) such that the order of the elements is reversed. For every `i` such that `0<=i<=`(__last-__first), `reverse_copy()` performs the assignment `*`(__result+(__last-__first)-1-i) = *(__first+i). The ranges ``[__first,__last) and ``[__result,__result+(__last-__first)) must not overlap.

Definition at line 1173 of file stl_algo.h.

## rotate()

template<typename _ForwardIterator >

constexpr _ForwardIterator std::_V2::rotate | ( | _ForwardIterator | __first,
|  | _ForwardIterator | __middle,
|  | _ForwardIterator | __last
| ) |  |

inline constexpr

Rotate the elements of a sequence.

Parameters

  __first | A forward iterator.
  __middle | A forward iterator.
  __last | A forward iterator.

Returns
  first + (last - middle).

Rotates the elements of the range ``[__first,__last) by ``(__middle - __first) positions so that the element at `__middle` is moved to `__first`, the element at `__middle+1` is moved to `__first+1` and so on for each element in the range ``[__first,__last).

This effectively swaps the ranges ``[__first,__middle) and ``[__middle,__last).

Performs `*`(__first+(n+(__last-__middle))%(__last-__first))=*(__first+n) for each `n` in the range ``[0,__last-__first).

Definition at line 1405 of file stl_algo.h.

## rotate_copy()

template<typename _ForwardIterator , typename _OutputIterator >

constexpr _OutputIterator std::rotate_copy | ( | _ForwardIterator | __first,
|  | _ForwardIterator | __middle,
|  | _ForwardIterator | __last,
|  | _OutputIterator | __result
| ) |  |

inline constexpr

Copy a sequence, rotating its elements.

Parameters

  __first | A forward iterator.
  __middle | A forward iterator.
  __last | A forward iterator.
  __result | An output iterator.

Returns
  An iterator designating the end of the resulting sequence.

Copies the elements of the range ``[__first,__last) to the range beginning at

Returns
  , rotating the copied elements by ``(__middle-__first) positions so that the element at `__middle` is moved to `__result`, the element at `__middle+1` is moved to `__result+1` and so on for each element in the range ``[__first,__last).

Performs `*`(__result+(n+(__last-__middle))%(__last-__first))=*(__first+n) for each `n` in the range ``[0,__last-__first).

Definition at line 1443 of file stl_algo.h.

## shuffle()

template<typename _RandomAccessIterator , typename _UniformRandomNumberGenerator >

void std::shuffle | ( | _RandomAccessIterator | __first,
|  | _RandomAccessIterator | __last,
|  | _UniformRandomNumberGenerator && | __g
| ) |  |

Shuffle the elements of a sequence using a uniform random number generator.

Parameters

  __first | A forward iterator.
  __last | A forward iterator.
  __g | A UniformRandomNumberGenerator (26.5.1.3).

Returns
  Nothing.

Reorders the elements in the range ``[__first,__last) using `__g` to provide random numbers.

Definition at line 3729 of file stl_algo.h.

## stable_partition()

template<typename _ForwardIterator , typename _Predicate >

_ForwardIterator std::stable_partition | ( | _ForwardIterator | __first,
|  | _ForwardIterator | __last,
|  | _Predicate | __pred
| ) |  |

inline

Move elements for which a predicate is true to the beginning of a sequence, preserving relative ordering.

Parameters

  __first | A forward iterator.
  __last | A forward iterator.
  __pred | A predicate functor.

Returns
  An iterator `middle` such that `__pred(i)` is true for each iterator `i` in the range ``[first,middle) and false for each `i` in the range ``[middle,last).

Performs the same function as `partition()` with the additional guarantee that the relative ordering of elements in each group is preserved, so any two elements `x` and `y` in the range ``[__first,__last) such that `__pred(x)==__pred(y)` will have the same relative ordering after calling `stable_partition()`.

Definition at line 1624 of file stl_algo.h.

## swap_ranges()

template<typename _ForwardIterator1 , typename _ForwardIterator2 >

constexpr _ForwardIterator2 std::swap_ranges | ( | _ForwardIterator1 | __first1,
|  | _ForwardIterator1 | __last1,
|  | _ForwardIterator2 | __first2
| ) |  |

constexpr

Swap the elements of two sequences.

Parameters

  __first1 | A forward iterator.
  __last1 | A forward iterator.
  __first2 | A forward iterator.

Returns
  An iterator equal to `first2+`(last1-first1).

Swaps each element in the range ``[first1,last1) with the corresponding element in the range ``[first2,(last1-first1)). The ranges must not overlap.

Definition at line 201 of file stl_algobase.h.

## transform() [1/2]

template<typename _InputIterator , typename _OutputIterator , typename _UnaryOperation >

constexpr _OutputIterator std::transform | ( | _InputIterator | __first,
|  | _InputIterator | __last,
|  | _OutputIterator | __result,
|  | _UnaryOperation | __unary_op
| ) |  |

constexpr

Perform an operation on a sequence.

Parameters

  __first | An input iterator.
  __last | An input iterator.
  __result | An output iterator.
  __unary_op | A unary operator.

Returns
  An output iterator equal to `__result+`(__last-__first).

Applies the operator to each element in the input range and assigns the results to successive elements of the output sequence. Evaluates `*`(__result+N)=unary_op(*(__first+N)) for each `N` in the range ``[0,__last-__first).

`unary_op` must not alter its argument.

Definition at line 4285 of file stl_algo.h.

## transform() [2/2]

template<typename _InputIterator1 , typename _InputIterator2 , typename _OutputIterator , typename _BinaryOperation >

constexpr _OutputIterator std::transform | ( | _InputIterator1 | __first1,
|  | _InputIterator1 | __last1,
|  | _InputIterator2 | __first2,
|  | _OutputIterator | __result,
|  | _BinaryOperation | __binary_op
| ) |  |

constexpr

Perform an operation on corresponding elements of two sequences.

Parameters

  __first1 | An input iterator.
  __last1 | An input iterator.
  __first2 | An input iterator.
  __result | An output iterator.
  __binary_op | A binary operator.

Returns
  An output iterator equal to `result+`(last-first).

Applies the operator to the corresponding elements in the two input ranges and assigns the results to successive elements of the output sequence. Evaluates `*`(__result+N)=__binary_op(*(__first1+N),*(__first2+N)) for each `N` in the range ``[0,__last1-__first1).

`binary_op` must not alter either of its arguments.

Definition at line 4323 of file stl_algo.h.

## unique() [1/2]

template<typename _ForwardIterator >

constexpr _ForwardIterator std::unique | ( | _ForwardIterator | __first,
|  | _ForwardIterator | __last
| ) |  |

inline constexpr

Remove consecutive duplicate values from a sequence.

Parameters

  __first | A forward iterator.
  __last | A forward iterator.

Returns
  An iterator designating the end of the resulting sequence.

Removes all but the first element from each group of consecutive values that compare equal. unique() is stable, so the relative order of elements that are not removed is unchanged. Elements between the end of the resulting sequence and `__last` are still present, but their value is unspecified.

Definition at line 953 of file stl_algo.h.

## unique() [2/2]

template<typename _ForwardIterator , typename _BinaryPredicate >

constexpr _ForwardIterator std::unique | ( | _ForwardIterator | __first,
|  | _ForwardIterator | __last,
|  | _BinaryPredicate | __binary_pred
| ) |  |

inline constexpr

Remove consecutive values from a sequence using a predicate.

Parameters

  __first | A forward iterator.
  __last | A forward iterator.
  __binary_pred | A binary predicate.

Returns
  An iterator designating the end of the resulting sequence.

Removes all but the first element from each group of consecutive values for which `__binary_pred` returns true. unique() is stable, so the relative order of elements that are not removed is unchanged. Elements between the end of the resulting sequence and `__last` are still present, but their value is unspecified.

Definition at line 984 of file stl_algo.h.

## unique_copy() [1/2]

template<typename _InputIterator , typename _OutputIterator >

constexpr _OutputIterator std::unique_copy | ( | _InputIterator | __first,
|  | _InputIterator | __last,
|  | _OutputIterator | __result
| ) |  |

inline constexpr

Copy a sequence, removing consecutive duplicate values.

Parameters

  __first | An input iterator.
  __last | An input iterator.
  __result | An output iterator.

Returns
  An iterator designating the end of the resulting sequence.

Copies each element in the range ``[__first,__last) to the range beginning at `__result`, except that only the first element is copied from groups of consecutive elements that compare equal. unique_copy() is stable, so the relative order of elements that are copied is unchanged.

_GLIBCXX_RESOLVE_LIB_DEFECTS DR 241. Does unique_copy() require CopyConstructible and Assignable?

_GLIBCXX_RESOLVE_LIB_DEFECTS DR 538. 241 again: Does unique_copy() require CopyConstructible and Assignable?

Definition at line 4494 of file stl_algo.h.

## unique_copy() [2/2]

template<typename _InputIterator , typename _OutputIterator , typename _BinaryPredicate >

constexpr _OutputIterator std::unique_copy | ( | _InputIterator | __first,
|  | _InputIterator | __last,
|  | _OutputIterator | __result,
|  | _BinaryPredicate | __binary_pred
| ) |  |

inline constexpr

Copy a sequence, removing consecutive values using a predicate.

Parameters

  __first | An input iterator.
  __last | An input iterator.
  __result | An output iterator.
  __binary_pred | A binary predicate.

Returns
  An iterator designating the end of the resulting sequence.

Copies each element in the range ``[__first,__last) to the range beginning at `__result`, except that only the first element is copied from groups of consecutive elements for which `__binary_pred` returns true. unique_copy() is stable, so the relative order of elements that are copied is unchanged.

_GLIBCXX_RESOLVE_LIB_DEFECTS DR 241. Does unique_copy() require CopyConstructible and Assignable?

Definition at line 4536 of file stl_algo.h.