e6ccf0ce
 Hu Chunming
提交三方库
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/* simple example for using class array<>
* (C) Copyright Nicolai M. Josuttis 2001.
* Distributed under the Boost Software License, Version 1.0. (See
* accompanying file LICENSE_1_0.txt or copy at
* http://www.boost.org/LICENSE_1_0.txt)
*/
#include <iostream>
#include <boost/array.hpp>
template <typename T>
void test_static_size (const T& cont)
{
int tmp[T::static_size];
for (unsigned i=0; i<T::static_size; ++i) {
tmp[i] = int(cont[i]);
}
for (unsigned j=0; j<T::static_size; ++j) {
std::cout << tmp[j] << ' ';
}
std::cout << std::endl;
}
int main()
{
// define special type name
typedef boost::array<float,6> Array;
// create and initialize an array
const Array a = { { 42.42f } };
// use some common STL container operations
std::cout << "static_size: " << a.size() << std::endl;
std::cout << "size: " << a.size() << std::endl;
// Can't use std::boolalpha because it isn't portable
std::cout << "empty: " << (a.empty()? "true" : "false") << std::endl;
std::cout << "max_size: " << a.max_size() << std::endl;
std::cout << "front: " << a.front() << std::endl;
std::cout << "back: " << a.back() << std::endl;
std::cout << "[0]: " << a[0] << std::endl;
std::cout << "elems: ";
// iterate through all elements
for (Array::const_iterator pos=a.begin(); pos<a.end(); ++pos) {
std::cout << *pos << ' ';
}
std::cout << std::endl;
test_static_size(a);
// check copy constructor and assignment operator
Array b(a);
Array c;
c = a;
if (a==b && a==c) {
std::cout << "copy construction and copy assignment are OK"
<< std::endl;
}
else {
std::cout << "copy construction and copy assignment are BROKEN"
<< std::endl;
}
typedef boost::array<double,6> DArray;
typedef boost::array<int,6> IArray;
IArray ia = { { 1, 2, 3, 4, 5, 6 } } ; // extra braces silence GCC warning
DArray da;
da = ia;
da.assign(42);
return 0; // makes Visual-C++ compiler happy
}
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