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In Windows Azure: What are web role, worker role and VM role?
...ong with your project code. All languages can make REST calls to the Azure API, and several languages (including those mentioned above) have SDKs that take care of this for you. All language SDKs are here, with source code on github, here.
With a VM role, you can install and run software with very ...
How to view the SQL queries issued by JPA?
... get the SQL for a specific Query at runtime you can use the DatabaseQuery API:
Query query = em.createNamedQuery("findMe");
Session session = em.unwrap(JpaEntityManager.class).getActiveSession();
DatabaseQuery databaseQuery = ((EJBQueryImpl)query).getDatabaseQuery();
databaseQuery.prepareCall(s...
C++ Modules - why were they removed from C++0x? Will they be back later on?
...d, but it adds a clear semantic to separate between the private and public API of a module. 4. The binary format of DLLs or shared objects is unaffected by the standard.
– lanoxx
Jul 18 '15 at 13:02
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When and why would you seal a class?
...eak class invariants. This really only applies if you're creating a public API, of course, but as I rule of thumb I seal any class not explicitly designed to be subclassed.
On a related note, applicable to unsealed classes only: any method created virtual is an extension point, or at least looks li...
Weird Integer boxing in Java
...afc there is no other way to unbox an Integer than via the official public API, i.e. calling intValue(). But there are other possible ways to get an Integer instance for an int value, e.g. a compiler may generate code keeping and reusing previously created Integer instances.
– ...
Async image loading from url inside a UITableView cell - image changes to wrong image while scrollin
..., I still felt compelled to update this to leverage modern conventions and API, notably:
Use NSURLSession rather than dispatching -[NSData contentsOfURL:] to a background queue;
Use dequeueReusableCellWithIdentifier:forIndexPath: rather than dequeueReusableCellWithIdentifier: (but make sure to use...
Natural Sort Order in C#
... and use it as the comparison function in your IComparer:
[DllImport("shlwapi.dll", CharSet = CharSet.Unicode)]
private static extern int StrCmpLogicalW(string psz1, string psz2);
Michael Kaplan has some examples of how this function works here, and the changes that were made for Vista to make it...
What's the difference between Task.Start/Wait and Async/Await?
... I guess Eric assumes that you have a basic understanding of the Task api. I look at that code and say to myself "yup t.Wait is going to block on the main thread until the task is completed."
– The Muffin Man
Jan 5 '15 at 21:42
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Scala vs. Groovy vs. Clojure [closed]
...lent Java class - types and all. As a case in point, the entire Akka Java API is written in Scala. So please explain what you mean by "can't integrate" here - because it reads like FUD to me.
– Kevin Wright
Mar 30 '15 at 14:41
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What is the difference between the Data Mapper, Table Data Gateway (Gateway), Data Access Object (DA
...from its data access mechanisms / adapts a specific data resource's access API to a generic client interface" allowing "data access mechanisms to change independently of the code that uses the data" (Sun Blueprints)
Repository seems very generic, exposing no notion of database interaction.
A DAO p...