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is vs typeof
...j.GetType() == typeof(ClassA)) {}, is faster, for those that don't want to read the article.
(Be aware that they don't do the same thing)
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Checking if an Android application is running in the background
...n ancestor for your Activities if you'd like to, but if your activity is already extended from MapActivity/ListActivity etc. you still need to write the following by hand):
@Override
protected void onResume() {
super.onResume();
MyApplication.activityResumed();
}
@Override
protected void onPa...
How does MySQL process ORDER BY and LIMIT in a query?
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@Green, you're mistaken. Read this for the explanation: dev.mysql.com/doc/refman/5.7/en/limit-optimization.html When the ORDER BY column is indexed, it may return records in a different order than without the LIMIT, when there are more than 1 records...
Force line-buffering of stdout when piping to tee
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Try unbuffer which is part of the expect package. You may already have it on your system.
In your case you would use it like this:
./a | unbuffer -p tee output.txt
(-p is for pipeline mode where unbuffer reads from stdin and passes it to the command in the rest of the arguments)
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How to select from subquery using Laravel Query Builder?
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@Skyzer You're not reading what I write. Nothing is escaped when you call toSql. Read about PDO php.net/manual/en/book.pdo.php and see the result of your $query->toSql()
– Jarek Tkaczyk
Sep 23 '15 at 6:...
What is the equivalent of Java's final in C#?
... keyword has several usages in Java. It corresponds to both the sealed and readonly keywords in C#, depending on the context in which it is used.
Classes
To prevent subclassing (inheritance from the defined class):
Java
public final class MyFinalClass {...}
C#
public sealed class MyFinalClass {...}...
Adding n hours to a date in Java?
...oes exactly what Nikita's answer does, but this is very simple and easy to read. Plus, if you already use Apache Commons / Lang... why not?
– Matt
Feb 13 '18 at 16:01
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Binding to static property
...leton:
public class VersionManager : DependencyObject {
public static readonly DependencyProperty FilterStringProperty =
DependencyProperty.Register( "FilterString", typeof( string ),
typeof( VersionManager ), new UIPropertyMetadata( "no version!" ) );
public string FilterSt...
find: missing argument to -exec
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That's about the best description i've read on -exec. It's extremely powerful but I always find it difficult to get the right syntax for it. This made a few things much clearer. Particularly wrapping the command in the separate shell. Nice. Thanks.
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Getting a slice of keys from a map
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@VinayPai it is okay to read from a map from multiple goroutines but not write
– darethas
Dec 1 '17 at 2:38
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