1. 測試代碼

string temp[] = { "one", "two", "three" };StrVec sv(begin(temp), end(temp));// run the string empty funciton on the first element in svif (!sv[0].empty())sv[0] = "None"; // assign a new value to the first string // we'll call getVec a couple of times// and will read the same file each timeifstream in("D:/code/cprimerGit/cplusprimer/cprimer/data/strvec-storyDataFile");//ifstream in("../data/strvec-storyDataFile");StrVec svec = getVec(in);print(svec);in.close();cout << "copy " << svec.size() << endl;auto svec2 = svec;print(svec2);cout << "assign" << endl;StrVec svec3;svec3 = svec2;print(svec3);StrVec v1, v2;v1 = v2; // v2 is an lvalue; copy assignmentin.open("D:/code/cprimerGit/cplusprimer/cprimer/data/strvec-storyDataFile");v2 = getVec(in); // getVec(in) is an rvalue; move assignmentin.close();StrVec vec; // empty StrVecstring s = "some string or another";vec.push_back(s); // calls push_back(const string&)vec.push_back("done"); // calls push_back(string&&)// emplace member covered in chpater 16s = "the end"; #ifdef VARIADICSvec.emplace_back(10, 'c'); // adds cccccccccc as a new last elementvec.emplace_back(s); // uses the string copy constructor #elsevec.push_back(string(10, 'c')); // calls push_back(string&&)vec.push_back(s); // calls push_back(const string&) #endifstring s1 = "the beginning", s2 = s; #ifdef VARIADICSvec.emplace_back(s1 + s2); // uses the move constructor #elsevec.push_back(string(s1 + s2)); // calls push_back(string&&) #endif

2. strvec-storyDataFile文件內(nèi)容：

Alice Emma has long flowing red hair. Her Daddy says when the wind blows through her hair, it looks almost alive, like a fiery bird in flight. A beautiful fiery bird, he tells her, magical but untamed. "Daddy, shush, there is no such thing," she tells him, at the same time wanting him to tell her more. Shyly, she asks, "I mean, Daddy, is there?"

3. 輸出結(jié)果：

【參考】

[1] 代碼copyControl.h

總結(jié)

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