Vectors are versatile data structures in C++ that provide dynamic array-like functionality.Whether you’re working on a small project or a large-scale application, the need to copy vectors arises frequently. Co
end()); 3 /* eliminate duplicate words: 4 * unique reorders words so that each word appears once in the 5 * front portion of words and returns an iterator one past the 6 unique range; 7 * erase uses a vector operation to remove the nonunique elements 8 */ 9 vector<string>::...
vector<int> data; // Simulating an expensive resource // Delete copy constructor and assignment operator to prevent copies CPP_DISABLE_COPY(ExpensiveResource) }; #endif // EXPENSIVE_RESOURCE_H // main.cpp #include "ExpensiveResource.h" #include <iostream> int main() { // Create an instance...
今天使用R爬取数据的时候发现一个奇怪的问题,我将每个属性的数据先保存在vector中,然后再合并到data.frame中时,发现打印names时数据正常显示中文,但是打印data.frame或者写入csv...文件时,却始终都是utf8的格式。 1.6K30 【Scala篇】--Scala中的函数 一、前述 Scala中的函数还是比较重要的,所以本文章把Scala中可...
- This is a modal window. No compatible source was found for this media. stdvectorv1vectorv1v1v2cout<<"Vector v2 contains following elements"<<endl;for(autoit=v2.begin();it!=v2.end();++it)cout<<*it<<endl;return0;} Let us compile and run the above program, this will produce the...
void test(std:vector<int>&& nums) { std::vector<int> nums1 = nums; std::vector<int> nums2 = std::move(nums); } 如上面的代码,nums到nums1的赋值走的是拷贝构造函数,而下面的nums2走的才是移动构造函数,这是由于nums作为函数的参数是有地址的,是左值,虽然它的类型是右值引用。 注意:在代码中...
(),4,std::back_inserter(out));std::cout<<out<<'\n';std::vector<int>v_in(128);std::iota(v_in.begin(), v_in.end(),1);std::vector<int>v_out(v_in.size());std::copy_n(v_in.cbegin(),100, v_out.begin());std::cout<<std::accumulate(v_out.begin(), v_out.end(),...
using namespace std; string sentence = "Something in the way she moves..."; istringstream iss(sentence); copy(istream_iterator<string>(iss), istream_iterator<string>(), ostream_iterator<string>(cout, "\n")); } 你也可以将分割后的字符串复制到vector内: ...
}return0; } 輸出 The new vector after copying is : 8 2 1 0 0 0 注:本文由純淨天空篩選整理自pushpeshrajdx01大神的英文原創作品copy_n() Function in C++ STL。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。
()) << endl; // Initialize array of strings StringArray rgs; rgs.push_back("This "); rgs.push_back("is "); rgs.push_back("one "); rgs.push_back("sentence. "); // Concatenate the strings in the array and print the sentence cout << "The concatenated vector of strings: " <<...