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SQL query return data from multiple tables
...reason I wrote this whole thing in the first place.
Part 2
Subqueries - what they are, where they can be used and what to watch out for
Cartesian joins AKA - Oh, the misery!
There are a number of ways to retrieve data from multiple tables in a database. In this answer, I will be using ANSI-92 ...
What is the Linux equivalent to DOS pause?
I have a Bash shell script in which I would like to pause execution until the user presses a key. In DOS, this is easily accomplished with the "pause" command. Is there a Linux equivalent I can use in my script?
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How to handle dependency injection in a WPF/MVVM application
...ifference. But why/how is the VM constructor launching a modal window? And what kind of window?
– sondergard
Apr 20 '17 at 14:28
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Difference between Python's Generators and Iterators
What is the difference between iterators and generators? Some examples for when you would use each case would be helpful.
1...
Where does R store packages?
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The install.packages command looks through the .libPaths variable. Here's what mine defaults to on OSX:
> .libPaths()
[1] "/Library/Frameworks/R.framework/Resources/library"
I don't install packages there by default, I prefer to have them installed in my home directory. In my .Rprofile, I hav...
What does `m_` variable prefix mean?
I often see m_ prefix used for variables ( m_World , m_Sprites ,...) in tutorials, examples and other code mainly related to game development.
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Autoincrement VersionCode with gradle extra properties
...een below. This one is running with Gradle 4.4 and Android Studio 3.1.1.
What this script does:
Creates a version.properties file if none exists (up vote Paul Cantrell's answer below, which is where I got the idea from if you like this answer)
For each build, debug release or any time you press ...
Infinite Recursion with Jackson JSON and Hibernate JPA issue
...rocessing of JSON properties read (during deserialization). If this is not what you're looking for, please keep reading below.
(Thanks to As Zammel AlaaEddine for pointing this out).
JsonManagedReference and JsonBackReference
Since Jackson 1.6 you can use two annotations to solve the infinite r...
Do I need Content-Type: application/octet-stream for file download?
...
No.
The content-type should be whatever it is known to be, if you know it. application/octet-stream is defined as "arbitrary binary data" in RFC 2046, and there's a definite overlap here of it being appropriate for entities whose sole intended purpose is t...
What does `someObject.new` do in Java?
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public Foo$Bar createBar() {
return new Foo$Bar(this);
}
So let's see what happens when you execute the following code.
Foo f = new Foo(5);
Foo.Bar b = f.createBar();
b.printVal();
First we instantiate an instance of Foo and intialise the val member to 5 (i.e. ...