大约有 47,000 项符合查询结果(耗时:0.0634秒) [XML]

https://stackoverflow.com/ques... 

Possible to do a MySQL foreign key to one of two possible tables?

...ecific type of filter is easy if you know which type you want to join to: SELECT * FROM Products INNER JOIN FiltersType2 USING (product_id) If you want the filter type to be dynamic, you must write application code to construct the SQL query. SQL requires that the table be specified and fixed at ...
https://stackoverflow.com/ques... 

Check if OneToOneField is None in Django

...fortunately, this doesn't work all the time. In case you want to work with select_related() now or in the future -- or maybe even to be sure you also handle other sorts of magic which may happen elsewhere -- you have to extend the test as follows: if hasattr(object, 'onetoonerevrelattr') and object....
https://stackoverflow.com/ques... 

Android custom dropdown/popup menu

... android:paddingEnd="10dip"> <ImageView android:id="@+id/shoe_select_icon" android:layout_width="30dp" android:layout_height="30dp" android:layout_gravity="center_vertical" android:scaleType="fitXY" /> <TextView android:id="@+id/shoe_select_text" android:l...
https://stackoverflow.com/ques... 

Android: “Path for project must have only one segment”

... me it was helpful to do the following: Run -> Run Configurations -> Select Android Application I don't know why, but there was something called New Application...delete it....after delete everything should work fine s...
https://stackoverflow.com/ques... 

delete word after or around cursor in VIM

... Probably worth mentioning that aw is one example of object selection. You can try object selections in visual mode to see what effect they have: vimdoc.sourceforge.net/htmldoc/motion.html#object-select – crantok Dec 29 '18 at 16:49 ...
https://stackoverflow.com/ques... 

Identity increment is jumping in SQL Server database

... the SQL Server. The solution is: Run SQL Server Configuration Manager. Select SQL Server Services. Right-click SQL Server and select Properties. In the opening window under Startup Parameters, type -T272 and click Add, then press Apply button and restart. ...
https://stackoverflow.com/ques... 

How can I toggle word wrap in Visual Studio?

... Visual Studio behaves differently to other editors: Triple click doesn't select whole line Cut command doesn't delete whole line Pressing End key twice does not move cursor to end of line Unfortunately these bugs have been closed "lower priority". If you'd like these bugs fixed, please vote for ...
https://stackoverflow.com/ques... 

How to resize a VirtualBox vmdk file

... want to download gparted iso and boot from that iso to resize your drive (select the iso from within the virtualbox settings). P.S. If your new size is too small, you'll get the same error even with your new vdi file. shar...
https://stackoverflow.com/ques... 

How to cut an entire line in vim and paste it?

... Pressing Shift+v would select that entire line and pressing d would delete it. You can also use dd, which is does not require you to enter visual mode. share | ...
https://stackoverflow.com/ques... 

Which version of MVC am I using?

... Select the System.Web.Mvc assembly in the "References" folder in the solution explorer. Bring up the properties window (F4) and check the Version ...