std::transform
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Defined in header <algorithm>
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template< class InputIt, class OutputIt, class UnaryOperation > OutputIt transform( InputIt first1, InputIt last1, OutputIt d_first, |
(1) | |
template< class InputIt1, class InputIt2, class OutputIt, class BinaryOperation > OutputIt transform( InputIt1 first1, InputIt1 last1, InputIt2 first2, |
(2) | |
std::transform
範囲に指定した関数を適用し、d_first
から始まる別の範囲に結果を格納. std::transform
applies the given function to a range and stores the result in another range, beginning at d_first
. You can help to correct and verify the translation. Click here for instructions.
unary_op
は[first1, last1)
によって定義された範囲に適用されます。第二版ではバイナリ操作binary_op
は二つの範囲の要素のペアに適用されます。[first1, last1)
でfirst2
や他の初めによって定義された1.unary_op
is applied to the range defined by [first1, last1)
. In the second version the binary operation binary_op
is applied to pairs of elements from two ranges: one defined by [first1, last1)
and the other beginning at first2
.You can help to correct and verify the translation. Click here for instructions.
目次 |
[編集] パラメータ
first1, last1 | - | 変換する要素の最初の範囲
Original: the first range of elements to transform The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. | |||||||||
first2 | - | 変換する要素の第2の範囲の始まり
Original: the beginning of the second range of elements to transform The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. | |||||||||
d_first | - | 目的の範囲の始まりは、
first1 またはfirst2 に等しいかもしれません Original: the beginning of the destination range, may be equal to first1 or first2 The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. | |||||||||
unary_op | - | unary operation function object that will be applied. The signature of the function should be equivalent to the following:
The signature does not need to have const &. | |||||||||
binary_op | - | binary operation function object that will be applied. The signature of the function should be equivalent to the following:
The signature does not need to have const &. | |||||||||
Type requirements | |||||||||||
-InputIt must meet the requirements of InputIterator .
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-InputIt1 must meet the requirements of InputIterator .
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-InputIt2 must meet the requirements of InputIterator .
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-OutputIt must meet the requirements of OutputIterator .
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[編集] 値を返します
You can help to correct and verify the translation. Click here for instructions.
[編集] 複雑
1)unary_op
アプリケーションunary_op
You can help to correct and verify the translation. Click here for instructions.
binary_op
アプリケーションbinary_op
You can help to correct and verify the translation. Click here for instructions.
[編集] 要件
unary_op
とbinary_op
全く副作用がありません。 (C + + 11時まで)unary_op
and binary_op
have no side effects. (C + + 11時まで)You can help to correct and verify the translation. Click here for instructions.
unary_op
とbinary_op
終了イテレータを含む任意のイテレータを無効、または関与の範囲の任意の要素を変更しません。 (C + + 11以来)unary_op
and binary_op
do not invalidate any iterators, including the end iterators, or modify any elements of the ranges involved. (C + + 11以来)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 UnaryOperation> OutputIt transform(InputIt first1, InputIt last1, OutputIt d_first, UnaryOperation unary_op) { while (first1 != last1) { *d_first++ = unary_op(*first1++); } return d_first; } |
Second version |
template<class InputIt1, class InputIt2, class OutputIt, class BinaryOperation> OutputIt transform(InputIt first1, InputIt last1, InputIt first2, OutputIt d_first, BinaryOperation binary_op) { while (first1 != last1) { *d_first++ = binary_op(*first1++, *first2++); } return d_first; } |
[編集] 例
You can help to correct and verify the translation. Click here for instructions.
#include <string> #include <cctype> #include <algorithm> #include <iostream> int main() { std::string s("hello"); std::transform(s.begin(), s.end(), s.begin(), (int (*)(int))std::toupper); std::cout << s; }
Output:
HELLO
[編集] も参照してください
ある範囲の要素に関数が適用されます Original: applies a function to a range of elements 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) |