大约有 47,000 项符合查询结果(耗时:0.0596秒) [XML]

https://stackoverflow.com/ques... 

Remove columns from DataTable in C#

... which I get a DataTable from that I am being passed back from a function call. It has 15-20 columns, however I only want 10 columns of the data. ...
https://stackoverflow.com/ques... 

How to export revision history from mercurial or git to cvs?

...en we finish or maybe every once in a while we want to commit our code and all of our revision history to cvs. We don't have write access to the project's cvs repo so we can't commit very frequently. What tool can we use to export our revision history to cvs? Currently we were thinking of using git ...
https://stackoverflow.com/ques... 

What is the difference between Unidirectional and Bidirectional JPA and Hibernate associations?

...s, so that you can access the other side without explicit queries. Also it allows you to apply cascading options to both directions. Note that navigational access is not always good, especially for "one-to-very-many" and "many-to-very-many" relationships. Imagine a Group that contains thousands of ...
https://stackoverflow.com/ques... 

How to assign colors to categorical variables in ggplot2 that have stable mapping?

...maintain consistent color schemes across multiple data frames that are not all obtained by subsetting a single large data frame. Managing the factors levels in multiple data frames can become tedious if they are being pulled from separate files and not all factor levels appear in each file. One way...
https://stackoverflow.com/ques... 

What are MVP and MVC and what is the difference?

... many tools encourage you are likely to come across three design patterns called Model-View-Controller , Model-View-Presenter and Model-View-ViewModel . My question has three parts to it: ...
https://stackoverflow.com/ques... 

Is there a way to access method arguments in Ruby?

... "#{arg} = #{eval arg}" }.join(', ') Note: since this answer was originally written, in current versions of Ruby eval can no longer be called with a symbol. To address this, an explicit to_s has been added when building the list of parameter names i.e. parameters.map { |arg| arg[1].to_s } ...
https://stackoverflow.com/ques... 

Long press gesture on UICollectionViewCell

...ILongPressGestureRecognizer *lpgr = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleLongPress:)]; lpgr.delegate = self; lpgr.delaysTouchesBegan = YES; [self.collectionView addGestureRecognizer:lpgr]; } -(void)handleLongPress:...
https://stackoverflow.com/ques... 

How to set response filename without forcing “save as” dialog

...t tested in IE 6, IE 8, modern Chrome, and modern Firefox, and it works in all of them; as far as I can tell, it's totally safe to use this nowadays. – Mark Amery Jun 1 '14 at 18:35 ...
https://stackoverflow.com/ques... 

Difference between 'self' and 'total' in Chrome CPU Profile of JS

...otal is how much time was spent in that function, and in the functions it called. share | improve this answer | follow | ...
https://stackoverflow.com/ques... 

Developing for Android in Eclipse: R.java not regenerating

... site suggests: if you run a clean on the project it should regenerate all the generated Java files, namely R. ...and... In Eclipse, under the Project menu, is an option build automatically. That would help you build the R.java file everytime modifications are made. The Clean... optio...