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No appenders could be found for logger(log4j)?
...leAppender
log4j.appender.R.File=example.log
log4j.appender.R.MaxFileSize=100KB
# Keep one backup file
log4j.appender.R.MaxBackupIndex=1
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n
Apache Solr
If using Solr, copy <solr>/...
Swapping column values in MySQL
...
+100
You could take the sum and subtract the opposing value using X and Y
UPDATE swaptest SET X=X+Y,Y=X-Y,X=X-Y;
Here is a sample test...
Django in / not in query
...n the context, if the filter is like "having count(xx)==yy" it's more than 100x faster to use annotate() (timeit gave me 1.0497902309998608 vs 0.00514069400014705)
– Olivier Pons
Apr 11 '19 at 8:18
...
How to identify numpy types in python?
... up with is:
isinstance(y, (np.ndarray, np.generic) )
However, it's not 100% clear that all numpy types are guaranteed to be either np.ndarray or np.generic, and this probably isn't version robust.
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Including another class in SCSS
...ken(#FFFFFF, 10%);
}
}
.class-b{
//specifically for class b
width: 100px;
&:hover{
color: darken(#FFFFFF, 20%);
}
}
More about Attribute Selectors on w3Schools
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How to articulate the difference between asynchronous and parallel programming?
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+100
I believe the main distinction is between concurrency and parallelism.
Async and Callbacks are generally a way (tool or mechanism) ...
How do you handle multiple submit buttons in ASP.NET MVC Framework?
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100
Eilon suggests you can do it like this:
If you have more than one button you
can disting...
What is the best way to paginate results in SQL Server
... query & then filter based on outer query? for ex: inner query returns 100,000 & outer query returns only 20.
– SoftwareGeek
Jun 16 '11 at 3:59
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Can git ignore a specific line?
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+100
If your file is of a specific type, you can declare a content filter driver, that you can declare in a .gitattributes file (as prese...
Change UICollectionViewCell size on different device orientations
...tIndexPath indexPath: NSIndexPath) -> CGSize {
return CGSize(width: 100, height: collectionView.frame.height * 0.9)
}
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