int main()
{
StrBlob b1 = {"what", "when", "how"};
cout << b1.use_count() << endl;
StrBlob b2 = b1; // copy initialization
cout << b2.use_count() << endl;
b2.push_back("whether"); // won't influence the value of b1
cout << b1.back() << endl;
cout << b2.back() << endl;
{
StrBlob b2 = {"a", "an", "the"};
b1 = b2; // assign local b2 to b1
b2.push_back("about");
cout << b2.use_count() << endl;
}
b1 = b1; // assign to itself
cout << b1.use_count() << endl; // reference count is still 1
const StrBlob b3({"and", "or", "not"});
cout << b3.front() << " "<< b3.back() << endl;
StrBlob b4 = b3;
cout << b4.use_count() << endl;
try
{
StrBlob b5;
cout << b5.front();
}
catch(out_of_range err)
{
cout << err.what() << endl;
}
return 0;
}
void testStrBlob(const StrBlob &sb) {
try {
std::cout << "front: " << sb.front() << " back: " << sb.back() << std::endl;
} catch (std::out_of_range err) {
std::cerr << err.what() << " out of range" << std::endl;
} catch (std::exception err) {
std::cerr << err.what() << std::endl;
}
}
int main()
{
const StrBlob cstrblob{ "come", "on", "liwen" };
StrBlob strblob{ "how", "are","you", "chii" };
std::cout << cstrblob.front() << " " << cstrblob.back() << std::endl;
strblob.back() = "liwen";
strblob.pop_back();
std::cout << strblob.front() << " " << strblob.back() << std::endl;
}
int main()
{
StrBlob sb{ "hello", "world" };
const StrBlob csb{ "const", "hello", "world", "aaa" };
std::cout << "sb : " << sb.front() << " " << sb.back() << std::endl;
std::cout << "csb : " << csb.front() << " " << csb.back() << std::endl;
return 0;
}
void pra_12_2()
{
StrBlob b1;
{
StrBlob b2 = { "taopeng", "oo", "hehe" };
b1 = b2;
b1.push_back("about");
cout << b2.size() << endl;
}
cout << b1.size() << endl;
cout << b1.front() << " " << b1.back() << endl;
const StrBlob b3 = b1;
cout << b3.front() << " " << b3.back() << endl;
}
int main(int argc, char const *argv[])
{
StrBlob b1;
{
StrBlob b2 = {"a", "asd", "qwed"};
b1 = b2;
b2.push_back("about");
cout << "b2.size() = " << b2.size() << endl;
}
cout << "b1.size() = " << b1.size() << endl;
cout << "b1.front() = " << b1.front() << endl;
const StrBlob b3 = b1;
cout << "b3.front() = " << b3.front()
<< " "
<< "b3.back() = " << b3.back()
<< endl;
return 0;
}
int main(int argc, char **argv)
{
StrBlob b1;
{
StrBlob b2 = { "a", "an", "the" };
b1 = b2;
b2.push_back("about");
cout << b2.size() << endl;
}
cout << b1.size() << endl;
cout << b1.front() << " " << b1.back() << endl;
const StrBlob b3 = b1;
cout << b3.front() << " " << b3.back() << endl;
for (auto it = b1.begin(); neq(it, b1.end()); it.incr())
{
cout << it.deref() << endl;
}
system("pause");
return 0;
}