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Find all records which have a count of an association greater than zero
... the code above will return duplicate projects for projects with more than one vacancies. To remove the duplicates, use
Project.joins(:vacancies).group('projects.id')
UPDATE:
As pointed out by @Tolsee, you can also use distinct.
Project.joins(:vacancies).distinct
As an example
[10] pry(main...
What Automatic Resource Management alternatives exist for Scala?
...anagement) on the web for Scala. It seems to be a rite-of-passage to write one, though most look pretty much like one another. I did see a pretty cool example using continuations, though.
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Method Syntax in Objective-C
Can someone explain this method declaration syntax for me? In this function, the number of rows of a UIPickerView (slot machine UI on the iPhone) is being returned. From my understanding, the Method is called ' pickerView ', and returns an NSInteger.
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Why does setTimeout() “break” for large millisecond delay values?
... answered Aug 12 '10 at 14:19
OneSHOTOneSHOT
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How do I select an entire row which has the largest ID in the table?
...e of max(id) is not unique, multiple rows are returned.
If you only want one such row, use @MichaelMior's answer,
SELECT row from table ORDER BY id DESC LIMIT 1
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Alternatives to gprof [closed]
... I'm emphasizing call instructions, but it applies to any instructions. If one has an honest-to-goodness hotspot bottleneck, such as a bubble sort of a large array of numbers, then the compare/jump/swap/increment instructions of the inner loop will be at the top/bottom of nearly every stack sample. ...
How do I use LINQ Contains(string[]) instead of Contains(string)
I got one big question.
22 Answers
22
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CGridCellNumeric - A numeric cell class for the MFC Grid - C/C++ - 清泛网移动版 - 专注IT技能提升
... has the ability to edit and display numbers, among other things. The best one that I could come up with within my price range (free) was Chris Maunder's MFC Grid 2.25 [^]. But unfortunately, for me it needed some modifications to get it to work the way I wanted. The one modification I present here...
CGridCellNumeric - A numeric cell class for the MFC Grid - C/C++ - 清泛网移动版 - 专注IT技能提升
... has the ability to edit and display numbers, among other things. The best one that I could come up with within my price range (free) was Chris Maunder's MFC Grid 2.25 [^]. But unfortunately, for me it needed some modifications to get it to work the way I wanted. The one modification I present here...
CGridCellNumeric - A numeric cell class for the MFC Grid - C/C++ - 清泛网移动版 - 专注IT技能提升
... has the ability to edit and display numbers, among other things. The best one that I could come up with within my price range (free) was Chris Maunder's MFC Grid 2.25 [^]. But unfortunately, for me it needed some modifications to get it to work the way I wanted. The one modification I present here...