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A migration to add unique constraint to a combination of columns
...uble tap on an api heavy app) I have two identical records in my DB right now and the model has the validation..
– baash05
Mar 17 '15 at 1:26
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What is the difference between a port and a socket?
...ress conditions.
The combination of an IP address and a port is strictly known as an endpoint and is sometimes called a socket. This usage originates with RFC793, the original TCP specification.
A TCP connection is defined by two endpoints aka sockets.
An endpoint (socket) is defined by the combi...
Similar to jQuery .closest() but traversing descendants?
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Excellent answer. I'd be interested to know whether $('#foo').find('.whatever').first(); is "breadth-first" or "depth-first"
– Colin
Sep 9 '14 at 12:34
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Auto-expanding layout with Qt-Designer
... Out in a Grid from the bottom of the context-menu. The QVBoxLayout should now stretch to fit the window and will resize automatically when the entire window is resized.
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Properties file in python (similar to Java Properties)
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Since nowhere here it is mentioned, let me add again that this is not the same. I cant speak for Java or Py3, and maybe it works for simple key/values. But the syntax for string interpolation is different. This solution provides P...
“ClickOnce does not support the request execution level 'requireAdministrator.'”
...Once does not support the request execution level 'requireAdministrator'. Now, I hadn't touched ClickOnce in this application. All I had done was include a manifest file requesting these permissions.
My problem now is that this error will not go away, and I cannot compile my program. Any advice ...
How do you access the matched groups in a JavaScript regular expression?
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@MichaelMikowski now you've just hidden your infinite loop, but your code will run slow. I'd argue that it's better to have code break in a bad way so you catch it in development. Putting some bs maximum iterations break in is sloppy. Hidin...
How can I quantify difference between two images?
...*255/rng
Run the main function:
if __name__ == "__main__":
main()
Now you can put this all in a script and run against two images. If we compare image to itself, there is no difference:
$ python compare.py one.jpg one.jpg
Manhattan norm: 0.0 / per pixel: 0.0
Zero norm: 0 / per pixel: 0.0
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CSS Display an Image Resized and Cropped
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As of now this is also supported by Edge (don't know since when though).
– Gerald Schneider
Jul 30 '18 at 13:02
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Use images instead of radio buttons
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I have this working for a set of 3 smiley faces. Now I need to have multiple rows on one form, each with their own set of smiley faces. My problem is that when one row is changed, they all change. Any ideas what part needs to be modified to accomplish this?
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