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Real life example, when to use OUTER / CROSS APPLY in SQL
...
Some uses for APPLY are...
1) Top N per group queries (can be more efficient for some cardinalities)
SELECT pr.name,
pa.name
FROM sys.procedures pr
OUTER APPLY (SELECT TOP 2 *
FROM sys.pa...
Count number of objects in list [closed]
...ctors (including lists) and factors, and of any other R object for which a method has been defined.
lengths(x)
Get the length of each element of a list or atomic vector (is.atomic) as an integer or numeric vector.
sha...
Convert List into Comma-Separated String
...ine(String.Join(",", new List<uint> { 1, 2, 3, 4, 5 }));
First Parameter: ","
Second Parameter: new List<uint> { 1, 2, 3, 4, 5 })
String.Join will take a list as a the second parameter and join all of the elements using the string passed as the first parameter into one single string.
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Interfaces vs. abstract classes [duplicate]
...The advantages of an abstract class are:
Ability to specify default implementations of methods
Added invariant checking to functions
Have slightly more control in how the "interface" methods are called
Ability to provide behavior related or unrelated to the interface for "free"
Interfaces are me...
Technically what is the main difference between Oracle JDK and OpenJDK? [duplicate]
...echnical differences are a consequence of the goal of each one (OpenJDK is meant to be the reference implementation, open to the community, while Oracle is meant to be a commercial one)
They both have "almost" the same code of the classes in the Java API; but the code for the virtual machine itself...
Android Left to Right slide animation
...is in a hobby project that I am working on, and it works great! Is there some way to externally set variables like duration, easing etc. when working with xml-based animation?
– Daniel Saidi
Aug 1 '13 at 13:50
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How to remove unused imports from Eclipse
...ion where the import list contains an public static inner class from the same file and the 'organize imports' could not remove the unnecessary entry. As the class wasn't used i made it private and the organizer was successfull...
– Bondax
Oct 10 '14 at 12:48
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Break a previous commit into multiple commits
...If you are on a different branch (e.g., a feature branch) that you plan to merge into master:
$ git rebase -i master
When you get the rebase edit screen, find the commit you want to break apart. At the beginning of that line, replace pick with edit (e for short). Save the buffer and exit. Reb...
Difference between window.location.href, window.location.replace and window.location.assign
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These do the same thing:
window.location.assign(url);
window.location = url;
window.location.href = url;
They simply navigate to the new URL. The replace method on the other hand navigates to the URL without adding a new record to the hist...