boost c++库学习实例

1、linux下载编译boost源码：

./bootstrap.sh

sudo ./bjam --layout=versioned --build-type=complete  install 

2、测试实例：

#include 
#include 
#include 
#include 
#include 
#include 
#include 
using namespace std;
using namespace boost;

void test001() {
    std::vector v(100);
    std::ofstream fs;
    progress_display pd(v.size());

    std::vector::iterator it;
    for (it = v.begin(); it != v.end(); ++it) {
        fs << *it << std::endl;
        ++it;
        cout << "*";
        //sleep(1);
    }
    cout << endl;
}
#include 
#include 

void test002() {
    boost::gregorian::date d(2010, 1, 30);
    std::cout << d.year() << std::endl;
    std::cout << d.month() << std::endl;
    std::cout << d.day() << std::endl;
    std::cout << d.day_of_week() << std::endl;
    std::cout << d.end_of_month().day() << std::endl;
}
#include 

class Shared {
public:

    Shared() {
        std::cout << "ctor() called" << std::endl;
    }

    Shared(const Shared & other) {
        std::cout << "copy ctor() called" << std::endl;
    }

    ~Shared() {
        std::cout << "dtor() called" << std::endl;
    }

    Shared & operator =(const Shared & other) {
        std::cout << "operator = called" << std::endl;
    }
};

void test003() {
    typedef boost::shared_ptr SharedSP;
    typedef std::vector VShared;
    VShared v;
    v.push_back(SharedSP(new Shared()));
    v.push_back(SharedSP(new Shared()));
}
#include  
//字符串转换为整形

void test004(string str) {
    int i = boost::lexical_cast(str);
    cout << i << endl;
}
#include  

void test_format() {
    // 使用%序号%的方式给出指示符， 后面用%连接对应的数据。
    cout << boost::format("writing %1%,  x=%2% : %3%-th try") % "toto" % 40.23 % 50 << endl;
    // 输出:writing toto,  x=40.23 : 50-th try
    // 可以延迟使用，顺序不必一致
    boost::format fmter("%2% %1%");
    fmter % 36;
    fmter % 77;
    cout << fmter << endl;
    // 输出:77 36

    // 可重用
    fmter % 12;
    fmter % 24;
    cout << fmter << endl;
    // 输出:24 12

    // 可直接转成字符串
    std::string s = fmter.str();
    std::string s2 = str(boost::format("%2% %1% %2% %1%") % "World" % "Hello");

    cout << s << endl << s2 << endl;
    // 输出:
    // 24 12
    // Hello World Hello World

    // 可以使用printf指示符
    cout << boost::format("%3.1f - %.2f%%") % 10.0 % 12.5 << endl;
    // 输出:10.0 - 12.50%

    // printf指示符里使用N$指定使用第几个参数
    cout << boost::format("%2$3.1f - %1$.2f%%") % 10.0 % 12.5 << endl;
    // 输出:12.5 - 10.00%
}
#include 

void test005() {
    string str("readme001readme002readme.txt");
    if (ends_with(str, "txt")) {
        cout << to_upper_copy(str) + " UPPER" << endl;
        assert(ends_with(str, "txt"));
    }
    replace_first(str, "readme", "followme");
    replace_all(str, "readme", "hehe");
    cout << str << endl;
    vector v(str.begin(), str.end());
    vector v2 = to_upper_copy(erase_first_copy(v, "txt"));
    for (int i = 0; i < v2.size(); ++i) {
        cout << v2[i];
    }
    cout << endl;
}
#include  

void test_tokenizer() {
    string s("This is  , a ,test!,中文,你好");
    boost::tokenizer<> tok(s);
    for (tokenizer<>::iterator beg = tok.begin(); beg != tok.end(); ++beg) {
        cout << *beg << "-";
    }
    cout << endl;
}
#include 
#include 
//需要编译器加上 -lboost_regex
//使用cppunit需要连接器加上 -lncurses -lcppunit -ldl
void test006() {

    regex reg("a.c");
    assert(regex_match("abc", reg));
    //assert(regex_match("a + c", reg));
    assert(!regex_match("ac", reg));
    assert(!regex_match("abd", reg));

    boost::regex reg2("\\d{3}([a-zA-Z]+).(\\d{2}|N/A)\\s\\1");
    std::string correct = "123Hello N/A Hello";
    std::string incorrect = "123Hello 12 hello";
    assert(boost::regex_match(correct, reg2) == true);
    assert(boost::regex_match(incorrect, reg2) == false);
}

#include  

void test_any() {
    typedef std::vector many;
    many a;
    a.push_back(2); //可以转换
    a.push_back(string("test")); //转换失败 
    for (unsigned int i = 0; i < a.size(); ++i) {
        cout << a[i].type().name() << "=";
        try {
            int result = any_cast(a[i]);
            cout << result << endl;
        } catch (boost::bad_any_cast & ex) {
            cout << "cast error:" << ex.what() << endl;
        }
    }
}

#include 

void hello() {
    std::cout << "Hello world, I'm a thread!" << std::endl;
}
//编译需要加上-lboost_system -L/usr/local/lib -lboost-thread
//-lboost_thread -lboost_system 
//如果报错error while loading shared libraries: libboost_thread.so.1.49.0: cannot open shared object file: No ，
//则使用sudo ldconfig /home/shaochangqing/study/boost_1_49_0/stage/lib 或者export PATH=${PATH}:/usr/local/lib:/usr/local/include

int test_Thread() {
    boost::thread thrd(&hello); // 译注：hello前面的&符号，可要可不要
    thrd.join();
    return 0;
}

//extern bool httpGet(/*out*/string& result, const string& host, uint16_t port, const string& url, boost::asio::io_service &_io);

/** 本程序基于boost1_55_0*/
int main(int argc, char** argv) {

    test_Thread();
    test001();
    test002();
    test003();
    test004("123456");
    test_format();
    test005();
    test_tokenizer();
    test006();
    test_any();
    /**boost::asio::io_service io;
    string str;
    httpGet(str,"http://www.baidu.com/",80,"index.html",io);
    cout<