std::inserter并传递 .begin()：std::set<int> s1, s2; s1 = getAnExcitingSet(); transform(s1.begin(), s1.end(), std::inserter(s2, s2.begin()), ExcitingUnaryFunctor());然后，插入迭代器将调用 s2.insert(s2.begin(), x)，其中 x是写入迭代器时传递给迭代器的值。该集使用迭代器...
/// Sets the set of documents to expand from.boolXapianEngine::setExpandSet(constset<string> &docsSet) { copy(docsSet.begin(), docsSet.end(),inserter(m_expandDocuments, m_expandDocuments.begin()));#ifdefDEBUGcout<<"XapianEngine::setExpandSet: "<< m_expandDocuments.size() <<" document...
set没有push_back，因为元素的位置是由集合的比较器确定的。使用std::inserter并传递.begin()...
#include <algorithm>#include <iostream>#include <iterator>#include <set>#include <vector>intmain(){std::multiset<int>s{1,2,3};// std::inserter is commonly used with multi-setsstd::fill_n(std::inserter(s, s.end()),5,2);for(intn:s)std::cout<<n<<' ';std::cout<<'\n';std...
#include<algorithm>#include<iostream>#include<iterator>#include<vector>#include<set>intmain(){std::multiset<int>s{1,2,3};// std::inserter is commonly used with setsstd::fill_n(std::inserter(s,s.end()),5,2);for(int n:s)std::cout<<n<<' ';std::cout<<'\n';std::vector<int...
Use std::back_inserter With std::set_intersection Algorithm This article will explain how to utilize the std::back_inserter function template in C++. Use std::back_inserter to Construct an Iterator That Appends Elements at the End of the Container Iterators, generally, provide a common interfa...
How to Convert Set to Vector in C++? May 6, 2019 c / c++, programming languages, tips, tricks No Comments Let’s say our task is to convert a set or unordered_set in C++ to std::vector, what would you do? Given the following set with integers (or other types) unordered_set<int...
#include <algorithm> #include <iterator> #include <set> Could you try that out? I haven't switched to VS 2015 yet. ️ 6 Author AsukaLangleyfag commented Jul 23, 2015 Yup, looks like it compiles now. AsukaLangleyfag mentioned this issue Jul 23, 2015 Cannot compile taiga with...
std::set<int> s1, s2; s1 = getAnExcitingSet(); std::transform(s1.begin(), s1.end(), std::back_inserter(s2), ExcitingUnaryFunctor()); 当然, std::back_inserter不起作用,因为没有push_back。 std::inserter也需要一个迭代器? 我没有使用std::inserter所以我不知道该怎么做。
#include<algorithm>#include<iostream>#include<iterator>using std::cin;using std::cout;using std::endl;using std::string;intmain(){strings1("hello");strings2("there");string s3;std::set_union(s1.begin(),s1.end(),s2.begin(),s2.end(),std::back_inserter(s3));cout<<s3<<endl;return...