StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

PO
primarykey
Id
415547
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
2
CommunityOwnedDate
CreationDate
2009-01-06T05:16:46.527
FavoriteCount
0
LastActivityDate
2009-01-06T05:25:10.300
LastEditDate
2009-01-06T05:25:10.300
LastEditorUserId
19302
OwnerUserId
19302
ParentId
415515
PostTypeId
2
Score
7
ViewCount
0
LastEditorDisplayName
Nelson LaQuet
text
Body
This is a good exercise for yourself to work on :) You should break your library into three parts <ul> <li>Loading the CSV file</li> <li>Representing the file in memory so that you can modify it and read it</li> <li>Saving the CSV file back to disk</li> </ul> So you are looking at writing a CSVDocument class that contains: <ul> <li>Load(const char* file);</li> <li>Save(const char* file);</li> <li>GetBody</li> </ul> So that you may use your library like this: <pre><code>CSVDocument doc; doc.Load("file.csv"); CSVDocumentBody* body = doc.GetBody(); CSVDocumentRow* header = body->GetRow(0); for (int i = 0; i < header->GetFieldCount(); i++) { CSVDocumentField* col = header->GetField(i); cout << col->GetText() << "\t"; } for (int i = 1; i < body->GetRowCount(); i++) // i = 1 so we skip the header { CSVDocumentRow* row = body->GetRow(i); for (int p = 0; p < row->GetFieldCount(); p++) { cout << row->GetField(p)->GetText() << "\t"; } cout << "\n"; } body->GetRecord(10)->SetText("hello world"); CSVDocumentRow* lastRow = body->AddRow(); lastRow->AddField()->SetText("Hey there"); lastRow->AddField()->SetText("Hey there column 2"); doc->Save("file.csv"); </code></pre> Which gives us the following interfaces: <pre><code>class CSVDocument { public: void Load(const char* file); void Save(const char* file); CSVDocumentBody* GetBody(); }; class CSVDocumentBody { public: int GetRowCount(); CSVDocumentRow* GetRow(int index); CSVDocumentRow* AddRow(); }; class CSVDocumentRow { public: int GetFieldCount(); CSVDocumentField* GetField(int index); CSVDocumentField* AddField(int index); }; class CSVDocumentField { public: const char* GetText(); void GetText(const char* text); }; </code></pre> Now you just have to fill in the blanks from here :) Believe me when I say this - investing your time into learning how to make libraries, especially those dealing with the loading, manipulation and saving of data, will not only remove your dependence on the existence of such libraries but will also make you an all-around better programmer. :) EDIT I don't know how much you already know about string manipulation and parsing; so if you get stuck I would be happy to help.
Tags
Title
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. POHow can I read and manipulate CSV file data in C++?
 singulars
 PostTypePostTypeId
 PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USnlaq
UserOwnerUserId
1. USnlaq
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. This table or related slice is empty.
VotesPostIdCreationDate
1. VO
 singulars
 PostPostId
 PO
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
2. VO
 singulars
 PostPostId
 PO
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
CommentsPostId
1. CODude, over the top. Thanks a megaton.
 singulars
 PostPostId
 PO
 UserUserId
 USwentz__
2. CONo, don't do it yourself. Use a well-tested library.
 singulars
 PostPostId
 PO
 UserUserId
 USBrian

Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.