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