STL container for storing any data type.

Use a std::vector instead of an array [1-4]. You can also create 2-dimensional vectors (or more dimensions).

Advantages of a vector over an array are:

* They allocate memory from the free space when increasing in size

* They are NOT a pointer in disguise [3].

* They can increase/decrease in size run-time.

* They can do range checking (using at())

#include <vector>

const int size = 100;

std::vector<int> v(size);

for (int i=0; i!=size; ++i) v[i]=i;

std::vector code snippets

Note that among these are also more general container code snippets.

0. Append two std::vectors, Append

1. Append, append two std::vectors

2. Convert Matrix<X> to Matrix<Y>, ConvertMatrix

3. Convert std::vector<std::vector<X> > to std::vector<std::vector<Y> >, ConvertMatrix

4. Convert two 2D std::vector<X> to 2D std::vector<Y>, ConvertMatrix

5. ConvertMatrix, convert Matrix<X> to Matrix<Y>

6. ConvertMatrix, convert std::vector<std::vector<X> > to std::vector<std::vector<Y> >

7. ConvertMatrix, convert two 2D std::vector<X> to 2D std::vector<Y>

8. CoutVector, std::cout on a std::vector

9. LoopReader, reading a container looped

10. RandomShuffle, shuffle a std::vector to a random order

11. Reading a container looped, LoopReader

12. Save a container to file, SaveContainer

13. SaveContainer, save a container to file

14. Shuffle a std::vector to a random order, RandomShuffle

15. Sort a std::vector, SortVector

16. SortVector, sort a std::vector

17. std::cout on a std::vector, CoutVector

External links

* SGI: http://www.sgi.com/tech/stl/Vector.html

* CodePedia: http://www.codepedia.com/1/CppVector

References

[1] Bjarne Stroustrup. The C++ Programming Language (3rd edition).

ISBN: 0-201-88954-4

[2] Herb Sutter and Andrei Alexandrescu. C++ coding standards:

101 rules, guidelines, and best practices.

ISBN: 0-32-111358-6, chapter 76: 'Use vector by default.

Otherwise, choose an appropriate container',

chapter 77: 'Use vector and string instead of arrays.'

[3] Marshall Cline,Greg Lomow and Mike Girou. C++ FAQs.

ISBN: 0-201-3098301, FAQ 28.02: 'Are arrays good or evil?'

(Answer: 'Arrays are evil').

[4] Bjarne Stroustrup. The C++ Programming Language (3rd edition).

ISBN: 0-201-88954-4 Chapter C.14.11 'Prefer vector over array'.

Go back to Richel Bilderbeek's C++ page.

Go back to Richel Bilderbeek's homepage.

(C++) std::vector

std::vector code snippets

External links

References