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C# Entity-Framework: How can I combine a .Find and .Include on a Model Object?
... .Include(i => i.Brand)
.FistOrDefault(x => x.ItemId == id);
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How do I get the resource id of an image if I know its name?
How do I get the resource id of an image if I know its name (in Android)?
5 Answers
5
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When do we have to use copy constructors?
.... If needed, deeply copying an object may also require
copying temporary files on the disk
opening a separate network connection
creating a separate worker thread
allocating a separate OpenGL framebuffer
etc
Self-registering objects
Consider a class where all objects - no matter how they have...
The function to show current file's full path in mini buffer
I need to get the full path of the file that I'm editing with emacs.
12 Answers
12
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selecting unique values from a column
...o if you want the whole record, the DISTINCT is worthless (unless it is an id field, and you can do a second query where id IN that list). Good news, though, if you have multiple duplicate results as a result of a JOIN you can do a GROUP BY and get the full results filtered.
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Read binary file as string in Ruby
I need an easy way to take a tar file and convert it into a string (and vice versa). Is there a way to do this in Ruby? My best attempt was this:
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Creating an empty file in C#
What's the simplest/canonical way to create an empty file in C#/.NET?
7 Answers
7
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mysql update column with value from another table
... UPDATE participants_registrations INNER JOIN participants ON participants.id = participants_registrations.participantId INNER JOIN registrations ON registrations.id = participants_registrations.registrationId LEFT JOIN groups ON (groups.id = registrations.groupId) SET registrations.groupId = g...
Map enum in JPA with fixed values?
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For versions earlier than JPA 2.1, JPA provides only two ways to deal with enums, by their name or by their ordinal. And the standard JPA doesn't support custom types. So:
If you want to do custom type conversions, you'll have to use a provider extension (with Hibe...
Java, List only subdirectories from a directory, not files
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You can use the File class to list the directories.
File file = new File("/path/to/directory");
String[] directories = file.list(new FilenameFilter() {
@Override
public boolean accept(File current, String name) {
return new File(cur...