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Scala: What is the difference between Traversable and Iterable traits in Scala collections?
...le do not keep any iteration state. It's the Iterator created and returned by the Iterable that keeps the state.
– Graham Lea
Jul 12 '14 at 11:13
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Mediator Vs Observer Object-Oriented Design Patterns
...capsulates how a set of objects interact. Mediator promotes loose coupling by keeping objects from referring to each other explicitly, and it lets you vary their interaction independently.
Source: dofactory
Example:
The observer pattern:
Class A, can have zero or more observers of type O registe...
How to detect Windows 64-bit platform with .NET?
... first check if running in a 64-bit process (I think in .NET you can do so by checking IntPtr.Size), and if you are running in a 32-bit process, you still have to call the Win API function IsWow64Process. If this returns true, you are running in a 32-bit process on 64-bit Windows.
Microsoft's Raymon...
How to use Comparator in Java to sort
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@Esko: comparison-by-subtraction "trick" is broken for general int stackoverflow.com/questions/2728793/…
– polygenelubricants
May 15 '10 at 7:19
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Is XML case-sensitive?
...ation is a standalone artifact in beta state, and XSD 1.1 is not supported by the JDK, not even by the most recent one 1.8. It isn't even planned for JDK 1.9 as far as I know. You cannot use advanced XML technologies like JAXB based on XSD 1.1 built-in from the JDK this way.
– ...
JavaScript - Getting HTML form values
...d="uniqueID" value="value" />
JS:
var nameValue = document.getElementById("uniqueID").value;
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Comparing two files in linux terminal
...<(sort a.txt) <(sort b.txt)
comm compares (sorted) input files and by default outputs three columns: lines that are unique to a, lines that are unique to b, and lines that are present in both. By specifying -1, -2 and/or -3 you can suppress the corresponding output. Therefore comm -23 a b li...
What is the difference between “instantiated” and “initialized”?
...hem a valid value if you do not do so explicitly. int's initialize to zero by default, DateTime's initialize to DateTime.MinValue by default.
Reference type variables initialize to the object you give it. The compiler will not assign an object (i.e. a valid value) if you don't. In this case the val...
Difference between save and saveAndFlush in Spring data jpa
I am trying to learn spring data JPA by testing some CRUD operation via JpaRepository .
2 Answers
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How do I obtain a Query Execution Plan in SQL Server?
...ght find it helpful to be able to obtain a plan via SQL Server Profiler or by inspecting the plan cache.
Method 1 - Using SQL Server Management Studio
SQL Server comes with a couple of neat features that make it very easy to capture an execution plan, simply make sure that the "Include Actual Exec...