Find an element in a vector array

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How to find an item in a std::vector?

I am using C++ Builder to create a VCL Forms application. I also have a vector array of appointment objects that each have a name, type, reminder date/time, a date/time, location and comments.

I am wanting to implement a find feature that will let a user find an appointment given certain criteria.

The user can choose to find an appointment in the vector array by either choosing the name, type etc or a combination of each.

What would be the best programming concept to use for this situation? The vector is not large. No more than 10 or 20 elements.

Thanks

Do you mean a vector, or an array of vectors? – juanchopanza Sep 26 '12 at 08:29 — juanchopanza, Sep 26 '12 at 08:29

hmjd · Answer 1 · 2012-09-26T08:37:03.563

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Use std::find_if() and define the required predicate (if C++11 you can use lambda function).

See online demo http://ideone.com/Md7sp.

edited Sep 26 '12 at 08:37

answered Sep 26 '12 at 08:26

hmjd

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score 1 · Accepted Answer · answered Sep 26 '12 at 08:26

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std::find_if(A.begin(),A.end(),isthatit(conditions));

where isthatit is a predicate object constructed from conditions.

answered Sep 26 '12 at 08:26

Michael Krelin - hacker

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score 0 · Answer 3 · answered Sep 26 '12 at 09:39

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If you have many criterias you should think about Boost.MultiIndex container which targets different search indexes. http://www.boost.org/doc/libs/1_51_0/libs/multi_index/doc/tutorial/index.html

answered Sep 26 '12 at 09:39

Eugene Mamin

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Index? "No more than 10 or 20 elements"… Index? ;-) – Michael Krelin - hacker Sep 26 '12 at 14:29

Find an element in a vector array

3 Answers3