std::remove_copy, std::remove_copy_if
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Defined in header <algorithm> | ||
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]複雑性
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 |
|---|
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]参照
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) | |
