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mongo group query how to keep fields
...are accumulated/funneled/reduced) doesn't make so much sense even theoretically. However, sorting before hand is actually inefficient compared to sorting each group within themselves since sorting algorithms are more complex than O(n). I wish there would be better ways in MongoDB.
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Does C# have extension properties?
....0 have seen this as proposal champion but it wasn't released yet, most of all because even if there is already an implementation, they want to make it right from the start.
But it will ...
There is an extension members item in the C# 7 work list so it may be supported in the near future. The curr...
.NET Configuration (app.config/web.config/settings.settings)
...emed to be ignoring my app.config file! It is supposed to connect to a web service and the service url is in my app.config. Unbeknownst to me, when I created the web reference, it also created a Settings.Settings file AND hardcoded the default value into the code. Even when I finally figured out (an...
How does Access-Control-Allow-Origin header work?
...hen a page from http://www.example.com attempts to access a user's data in service.example.com, the following request header would be sent to service.example.com:
Origin: http://www.example.com
The server at service.example.com may respond with:
An Access-Control-Allow-Origin (ACAO) header in its...
Python circular importing?
... of it) for the first time, the code inside the module is executed sequentially like any other code; e.g., it is not treated any differently that the body of a function. An import is just a command like any other (assignment, a function call, def, class). Assuming your imports occur at the top of th...
Why does MSBuild look in C:\ for Microsoft.Cpp.Default.props instead of c:\Program Files (x86)\MSBui
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Installing Microsoft Visual C++ 2010 Service Pack 1 Compiler Update for the Windows SDK 7.1 fixed the MSB4019 errors that I was getting building on Windows7 x64.
The readme of that update states that the recommended order is
Visual Studio 2010
Windows SDK 7.1...
Where to place JavaScript in an HTML file?
...and no sooner.
Also, depending on your users' physical location, using a service like Amazon's S3 service may help users download it from a server physically closer to them than your server.
Is your js script a commonly used lib like jQuery or prototype? If so, there are a number of companies, li...
How to model type-safe enum types?
...ample above) does not offer exhaustive pattern matching. I have researched all the different enumeration patterns currently being used in Scala and give and overview of them in this StackOverflow answer (including a new pattern which offers the best of both scala.Enumeration and the "sealed trait +...
How to fix Hibernate LazyInitializationException: failed to lazily initialize a collection of roles,
...d you probably won't want to do that there so you will need to implement a service class in front of the dao which has the @Transactional boundaries from within which you can walk the desired child entities
– jcmwright80
Apr 2 '14 at 21:32
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How do I look inside a Python object?
...-in functions:
type()
dir()
id()
getattr()
hasattr()
globals()
locals()
callable()
type() and dir() are particularly useful for inspecting the type of an object and its set of attributes, respectively.
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