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Entity Framework 4 Single() vs First() vs FirstOrDefault()
I'm having a devil of a time finding a comparison of the different ways to query for a single item, and when to use each.
6...
how can I see what ports mongo is listening on from mongo shell?
If I have a mongo instance running, how can I check what port numbers it is listening on from the shell? I thought that db.serverStatus() would do it but I don't see it. I see this
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@Html.HiddenFor does not work on Lists in ASP.NET MVC
... tiny mod needed though: The object's Id field needs to be referred to. So if the field is called RowId, then: @Html.HiddenFor(model => Model.ToGroups[i].RowId)
– Krishna Gupta
Nov 3 '15 at 16:11
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How to initialize private static members in C++?
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The class declaration should be in the header file (Or in the source file if not shared).
File: foo.h
class foo
{
private:
static int i;
};
But the initialization should be in source file.
File: foo.cpp
int foo::i = 0;
If the initialization is in the header file then each file tha...
How do I join two lists in Java?
Conditions: do not modifiy the original lists; JDK only, no external libraries. Bonus points for a one-liner or a JDK 1.3 version.
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Practical uses for the “internal” keyword in C#
...ed to code that is using the framework.
You can also use the internal modifier along with the InternalsVisibleTo assembly level attribute to create "friend" assemblies that are granted special access to the target assembly internal classes.
This can be useful for creation of unit testing assemb...
Java “params” in method signature?
In C#, if you want a method to have an indeterminate number of parameters, you can make the final parameter in the method signature a params so that the method parameter looks like an array but allows everyone using the method to pass as many parameters of that type as the caller wants.
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How to run a single test with Mocha?
...Script stuff. My test file contains 5 tests. Is that possible to run a specific test (or set of tests) rather than all the tests in the file?
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How to handle the modal closing event in Twitter Bootstrap?
...tstrap, looking at the modals documentation. I wasn't able to figure out if there is a way to listen to the close event of the modal and execute a function.
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foldl versus foldr behavior with infinite lists
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How folds differ seems to be a frequent source of confusion, so here's a more general overview:
Consider folding a list of n values [x1, x2, x3, x4 ... xn ] with some function f and seed z.
foldl is:
Left associative: f ( ... (f (f ...