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RegEx backreferences in IntelliJ
...ables with dollar-curly wrappers, ie, '+ var +' to ${var} in some template strings and couldn't figure out why intellij wouldn't finish the replacement. turns out $ needs to be escaped in the replacement.
– worc
Oct 18 '17 at 21:39
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How can I provide multiple conditions for data trigger in WPF?
...example:
Suppose we want to do some actions if the property Text="" (empty string) AND IsKeyboardFocused="False", then your code should look like the following:
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="Text" Value="" />
<Condition Proper...
Move an array element from one array position to another
...
At first string of function you should return array, as it done at the end.
– Sergey Voronezhskiy
Mar 31 '17 at 8:11
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SSL is not enabled on the server
...
// , I added this to my connection string, and it worked successfully. Thanks, @Harald.
– Nathan Basanese
Nov 2 '18 at 19:11
add a comm...
How to make ThreadPoolExecutor's submit() method block if it is saturated?
...ockingQueue, rejectedExecutionHandler);
private int downloadThumbnail(String fileListPath){
executorService.submit(new yourRunnable());
}
}
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Is List a subclass of List? Why are Java generics not implicitly polymorphic?
... arrays, which do allow that type of covariance:
Object[] objects = new String[10];
objects[0] = Boolean.FALSE;
That code compiles fine, but throws a runtime error (java.lang.ArrayStoreException: java.lang.Boolean in the second line). It is not typesafe. The point of Generics is to add the co...
Types in Objective-C on iOS
...G_MAX); // unsigned long long int
When run on an iPhone 3GS (iPod Touch and older iPhones should yield the same result) you get:
Primitive sizes:
The size of a char is: 1.
The size of short is: 2.
The size of int is: 4.
The size of long is: 4. ...
Run an exe from C# code
...void LaunchCommandLineApp()
{
// For the example
const string ex1 = "C:\\";
const string ex2 = "C:\\Dir";
// Use ProcessStartInfo class
ProcessStartInfo startInfo = new ProcessStartInfo();
startInfo.CreateNoWindow = false;
startInfo.UseShe...
How to form tuple column from two columns in Pandas
I've got a Pandas DataFrame and I want to combine the 'lat' and 'long' columns to form a tuple.
4 Answers
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MySQL IF NOT NULL, then display 1, else display 0
...eturns 0. Thus, you have to remember to explicitly check for NULL or empty string:
select if(name is null or name = '', 0, 1)
PS Eugen's example up above is correct, but I wanted to clarify this nuance as it caught me by surprise.
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