BitMagic-C++
svsample01.cpp
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1/*
2Copyright(c) 2002-2017 Anatoliy Kuznetsov(anatoliy_kuznetsov at yahoo.com)
3
4Licensed under the Apache License, Version 2.0 (the "License");
5you may not use this file except in compliance with the License.
6You may obtain a copy of the License at
7
8 http://www.apache.org/licenses/LICENSE-2.0
9
10Unless required by applicable law or agreed to in writing, software
11distributed under the License is distributed on an "AS IS" BASIS,
12WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13See the License for the specific language governing permissions and
14limitations under the License.
15
16For more information please visit: http://bitmagic.io
17*/
18
19/** \example svsample01.cpp
20 Example of how to use bm::sparse_vector<> template class to set values
21
22 \sa bm::sparse_vector<>::import
23 \sa bm::sparse_vector<>::at
24 \sa bm::sparse_vector<>::optimize
25 \sa bm::sparse_vector<>::size
26*/
27
28/*! \file svsample01.cpp
29 \brief Example: sparse_vector<> container set values
30*/
31
32
33#include <iostream>
34
35#include "bm.h"
36#include "bmsparsevec.h"
37
38using namespace std;
39
40int main(void)
41{
42 try
43 {
45
46 unsigned arr[3] = {1,2,3};
47 sv1.import(arr, 3); // import from a C-style array (fastest way to populate)
48
49 // optimize memory allocation of sparse vector
50 {
52 sv1.optimize(tb);
53 }
54
55 cout << "sv1.size() = " << sv1.size() << endl;
56 cout << "sv[]:";
57
58 // print the vector elements using direct access operator
59 for (unsigned i = 0; i < sv1.size(); ++i)
60 {
61 cout << sv1.at(i) << ",";
62 }
63 cout << endl;
64
65 // add more at the end
66 unsigned arr2[5] = {10, 20, 30, 40, 50};
67 sv1.import(arr2, 5, sv1.size());
68
69 cout << "sv1.size() = " << sv1.size() << endl;
70 cout << "sv[]:";
71 for (unsigned i = 0; i < sv1.size(); ++i)
72 {
73 cout << sv1.at(i) << ",";
74 }
75 cout << endl;
76
77
78 }
79 catch(std::exception& ex)
80 {
81 std::cerr << ex.what() << std::endl;
82 return 1;
83 }
84
85
86 return 0;
87}
88
Compressed bit-vector bvector<> container, set algebraic methods, traversal iterators.
#define BM_DECLARE_TEMP_BLOCK(x)
Definition bm.h:47
Sparse constainer sparse_vector<> for integer types using bit-transposition transform.
sparse vector with runtime compression using bit transposition method
Definition bmsparsevec.h:82
value_type at(size_type idx) const
access specified element with bounds checking
size_type size() const BMNOEXCEPT
return size of the vector
void import(const value_type *arr, size_type arr_size, size_type offset=0, bool set_not_null=true)
Import list of elements from a C-style array.
void optimize(bm::word_t *temp_block=0, typename bvector_type::optmode opt_mode=bvector_type::opt_compress, typename sparse_vector< Val, BV >::statistics *stat=0)
run memory optimization for all vector plains
int main(void)