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MySQL: Invalid use of group function
I am using MySQL. Here is my schema:
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Why doesn't the example compile, aka how does (co-, contra-, and in-) variance work?
Following on from this question , can someone explain the following in Scala:
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Is there a builtin confirmation dialog in Windows Forms?
I'd like to create a simple confirm dialog saying "Please check the information and if you're sure it's correct, click OK."
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in entity framework code first, how to use KeyAttribute on multiple columns
I'm creating a POCO model to use with entity framework code first CTP5. I'm using the decoration to make a property map to a PK column. But how can I define a PK on more then one column, and specifically, how can I control order of the columns in the index? Is it a result of the order of propert...
RESTful Login Failure: Return 401 or Custom Response
This is a conceptual question.
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Split list into multiple lists with fixed number of elements
How to split a List of elements into lists with at most N items?
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How do I list all loaded assemblies?
In .Net, I would like to enumerate all loaded assemblies over all AppDomains. Doing it for my program's AppDomain is easy enough AppDomain.CurrentDomain.GetAssemblies() . Do I need to somehow access every AppDomain? Or is there already a tool that does this?
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Javascript Array.sort implementation?
Which algorithm does the JavaScript Array#sort() function use? I understand that it can take all manner of arguments and functions to perform different kinds of sorts, I'm simply interested in which algorithm the vanilla sort uses.
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How to define @Value as optional
I have the following in a Spring bean:
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What is the difference between an annotated and unannotated tag?
If I want to tag the current commit. I know both of the following command lines work:
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