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Group By Multiple Columns
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If you're new to grouping with anonymous types the use of the 'new' keyword in this example does the magic.
– Chris
Aug 6 '13 at 15:41
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Include all existing fields and add new fields to document
I would like to define a $project aggregation stage where I can instruct it to add a new field and include all existing fields, without having to list all the existing fields.
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What makes a SQL statement sargable?
By definition (at least from what I've seen) sargable means that a query is capable of having the query engine optimize the execution plan that the query uses. I've tried looking up the answers, but there doesn't seem to be a lot on the subject matter. So the question is, what does or doesn't make...
Mockito: Stubbing Methods That Return Type With Bounded Wild-Cards
...non-type safe method doReturn for this purpose,
@Test
public void testMockitoWithGenerics()
{
DummyClass dummyClass = Mockito.mock(DummyClass.class);
List<? extends Number> someList = new ArrayList<Integer>();
Mockito.doReturn(someList).when(dummyClass).dummyMethod();
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What is the difference between an Azure Web Site and an Azure Web Role
What are the material differences between the new Azure Web Sites and the traditional Azure Web Roles for an ASP.NET MVC application? What reason would I choose a "web site" over a "web role" or vice versa?
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Apache Prefork vs Worker MPM
...Prefork and worker are two type of MPM apache provides. Both have their merits and demerits.
By default mpm is prefork which is thread safe.
Prefork MPM uses multiple child processes with one thread each and each process handles one connection at a time.
Worker MPM uses multiple child processes w...
Populate data table from data reader
...follow
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edited Sep 1 '15 at 13:06
Musakkhir Sayyed
5,82099 gold badges3535 silver badges5858 bronze badges
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Operator overloading in Java
Please can you tell me if it is possible to overload operators in Java? If it is used anywhere in Java could you please tell me about it.
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Style disabled button with CSS
I'm trying to change the style of a button with an embedded image as seen in the following Fiddle:
11 Answers
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How can I convert immutable.Map to mutable.Map in Scala?
...anism, and so has the potential to be more efficient if library code was written to take advantage of this:
val m = collection.immutable.Map(1->"one",2->"Two")
val n = collection.mutable.Map(m.toSeq: _*)
This works because a Map can also be viewed as a sequence of Pairs.
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