std::remove_copy, std::remove_copy_if
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Defined in header <algorithm>
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template< class InputIt, class OutputIt, class T > OutputIt remove_copy( InputIt first, InputIt last, OutputIt d_first, |
(1) | |
template< class InputIt, class OutputIt, class UnaryPredicate > OutputIt remove_copy_if( InputIt first, InputIt last, OutputIt d_first, |
(2) | |
Copies elements from the range [first, last)
, to another range beginning at d_first
, omitting the elements which satisfy specific criteria. The first version ignores the elements that are equal to value
, the second version ignores the elements for which predicate p
returns true. Source and destination ranges cannot overlap.
目次 |
[編集] パラメータ
first, last | - | コピーする要素の範囲
Original: the range of elements to copy The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
d_first | - | the beginning of the destination range. |
value | - | the value of the elements not to copy |
型の要件 | ||
-InputIt は InputIterator
の要求を満足しなければなりません。 | ||
-OutputIt は OutputIterator
の要求を満足しなければなりません。 |
[編集] 値を返します
コピーされた最後の要素過去の要素を指すイテレータ.
Original:
Iterator to the element past the last element copied.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
[編集] 複雑
述語の正確
last - first
アプリケーション.Original:
Exactly
last - first
applications of the predicate.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
[編集] 可能な実装
First version |
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template<class InputIt, class OutputIt, class T> OutputIt remove_copy(InputIt first, InputIt last, OutputIt d_first, const T& value) { for (; first != last; ++first) { if (!(*first == value)) { *d_first++ = *first; } } return d_first; } |
Second version |
template<class InputIt, class OutputIt, class UnaryPredicate> OutputIt remove_copy_if(InputIt first, InputIt last, OutputIt d_first, UnaryPredicate p) { for (; first != last; ++first) { if (!p(*first)) { *d_first++ = *first; } } return d_first; } |
[編集] 例
The following code outputs a string while erasing the spaces on the fly.
このコードを実行します
#include <algorithm> #include <iterator> #include <string> #include <iostream> int main() { std::string str = "Text with some spaces"; std::cout << "before: " << str << "\n"; std::cout << "after: "; std::remove_copy(str.begin(), str.end(), std::ostream_iterator<char>(std::cout), ' '); std::cout << '\n'; }
出力:
before: Text with some spaces after: Textwithsomespaces
[編集] も参照してください
特定の条件を満たす要素を削除します Original: removes elements satisfying specific criteria The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (関数テンプレート) |