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Finding duplicate values in a SQL table
...T(*) > 1
Simply group on both of the columns.
Note: the older ANSI standard is to have all non-aggregated columns in the GROUP BY but this has changed with the idea of "functional dependency":
In relational database theory, a functional dependency is a constraint between two sets of attrib...
How do I save a String to a text file using Java?
...u would to any output stream:
out.println(text);
You'll need exception handling, as ever. Be sure to call out.close() when you've finished writing.
If you are using Java 7 or later, you can use the "try-with-resources statement" which will automatically close your PrintStream when you are done w...
Set android shape color programmatically
...le. Thanks Tyler Pfaff, for pointing this out.
The drawable is an oval and is the background of an ImageView
Get the Drawable from imageView using getBackground():
Drawable background = imageView.getBackground();
Check against usual suspects:
if (background instanceof ShapeDrawable) {
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What are the -Xms and -Xmx parameters when starting JVM?
Please explain the use of Xms and Xmx parameters in JVMs. What are the default values for them?
5 Answers
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How to ignore a property in class if null, using json.net
...rializer yourself rather than using JavaScriptConvert there is a NullValueHandling property which you can set to ignore.
Here's a sample:
JsonSerializer _jsonWriter = new JsonSerializer {
NullValueHandling = NullValueHandling.Ignore
};
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How to avoid java.util.ConcurrentModificationException when iterating through and removing elements
...ould have mentioned that i remove the elements in another part of the code and not the loop itself.
– RoflcoptrException
Nov 12 '11 at 13:28
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How to get a list of column names on Sqlite3 database?
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Just to put this into code terms for SQLiteDatabase on Android, write db.rawQuery("PRAGMA table_info(" + tablename + ")", null);
– Noumenon
Jun 8 '13 at 14:14
4...
Convert JSON to Map
...
And looks like Jackson has moved since 09 so: Jackson data-bind
– jacob.mccrumb
Sep 21 '16 at 18:42
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How to get memory available or used in C#
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Process proc = Process.GetCurrentProcess();
To get the current process and use:
proc.PrivateMemorySize64;
To get the private memory usage. For more information look at this link.
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Automatically start a Windows Service on install
...ervice does not start when installed, I have to manually open the services and click start. Is there a way to start it either via the command line, or through the code of the Service?
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