13.47.cpp

#include <iostream>
#include <vector>
#include "String.h"

void print(const String &s) {
  std::cout << "==== String <" << &s << ">:<" << s.str() << "> size: "
            << s.size() << " capacity: " << s.capacity() << std::endl;
}

void print(std::vector<String> &vs) {
  std::cout << "== vector <" << &vs << "> size:"
            << vs.size() << " capacity: " << vs.capacity() << std::endl;
  for (const auto &s: vs)
    print(s);
}

int main() {
  String s1; print(s1);
  s1.pop_back(); print(s1);
  s1.push_back('a'); print(s1);
  s1.push_back('b'); print(s1);
  s1.push_back('c'); print(s1);
  s1.push_back('d'); print(s1);
  {
    String s2 = "s2"; print(s2);
    s2 = "s3"; print(s2);
    char *cs = "def";
    s2 = cs; print(s2);
    s2 = s1; print(s2);
  }
  print(s1);
  s1.pop_back(); print(s1);

  s1.reserve(s1.capacity() / 2); print(s1);
  s1.reserve(s1.capacity() * 2); print(s1);

  s1.resize(s1.size() + 6); print(s1);
  s1.resize(s1.size() + 6, 'x'); print(s1);
  s1.resize(s1.size() - 6); print(s1);
  s1.resize(s1.size() - 6, 'x'); print(s1);

  String s2 { 'm', 'n', 'p', 'q', 'r' }; print(s2);
  String s3 = { 'm', 'n', 'p', 'q', 'r' }; print(s3);

  std::vector<String> vs;
  vs.push_back("s1"); print(vs);
  vs.push_back("s2"); print(vs);
  vs.push_back("s3"); print(vs);
  vs.push_back("s4"); print(vs);
  vs.push_back("s5"); print(vs);
  vs.push_back("s6"); print(vs);
  vs.push_back("s7"); print(vs);
  vs.push_back("s8"); print(vs);

  return 0;
}