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postgresql port confusion 5433 or 5432?
.../services is only advisory, it's a listing of well-known ports. It doesn't mean that anything is actually running on that port or that the named service will run on that port.
In PostgreSQL's case it's typical to use port 5432 if it is available. If it isn't, most installers will choose the next fr...
What is the difference between “AS” and “IS” in an Oracle stored procedure?
I see Oracle procedures sometimes written with "AS", and sometimes with "IS" keyword.
6 Answers
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Get value of dynamically chosen class constant in PHP
I would like to be able to do something like this:
7 Answers
7
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How does Haskell printf work?
...ty is second to none only to dependently-typed languages. But there is some deep magic going on with Text.Printf that seems rather type-wonky.
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To find whether a column exists in data frame or not
I have a data.frame with the name "abcframe"
4 Answers
4
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fork() branches more than expected?
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The fork() primitive often stretches the imagination. Until you get a feel for it, you should trace out on paper what each operation is and account for the number of processes. Don't forget that fork() creates a near-perfect copy of the ...
iPhone - Get Position of UIView within entire UIWindow
The position of a UIView can obviously be determined by view.center or view.frame etc. but this only returns the position of the UIView in relation to it's immediate superview.
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Showing data values on stacked bar chart in ggplot2
I'd like to show data values on stacked bar chart in ggplot2. Here is my attempted code
2 Answers
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Python OpenCV2 (cv2) wrapper to get image size?
How to get the size of an image in cv2 wrapper in Python OpenCV (numpy). Is there a correct way to do that other than numpy.shape() . How can I get it in these format dimensions: (width, height) list?
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What is a sealed trait?
Sealed classes are described in 'Programming in Scala', but sealed traits are not.
Where can I find more information about a sealed trait?
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