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What does SQL clause “GROUP BY 1” mean?
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It means to group by the first column regardless of what it's called. You can do the same with ORDER BY.
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Persistent invalid graphics state error when using ggplot2
... but do you have any idea as to why it does?
– Pedro Cavalcante
Sep 14 '18 at 20:38
2
@PedroCaval...
How do I create a datetime in Python from milliseconds?
I can create a similar Date object in Java by java.util.Date(milliseconds) . How do I create the comparable in Python?
5 A...
Convert object to JSON in Android
...t.put("precio", getPrecio());
return jsonObject.toString();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return "";
}
}
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How should I copy Strings in Java?
..., the backup variable still contains the original value "hello" (this is because of String's immutability right?).
5 Answer...
Suppress/ print without b' prefix for bytes in Python 3
Just posting this so I can search for it later, as it always seems to stump me:
4 Answers
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Purpose of asterisk before a CSS property
The following is taken from the Yahoo CSS reset. Can someone please explain the purpose of the asterisks?
6 Answers
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Using Moq to mock an asynchronous method for a unit test
I am testing a method for a service that makes a Web API call. Using a normal HttpClient works fine for unit tests if I also run the web service (located in another project in the solution) locally.
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npm: disable postinstall script for package
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It's not possible to disable only postinstall scripts. However, you can disable all scripts using:
$ npm install --ignore-scripts
As delbertooo mentionned in the comments, this also disables the scripts of the dependencies.
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Difference between val() and text()
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matched elements. This method works on
both HTML and XML documents. Cannot be
used on input elements. For input
field text use the val attribute.
.val()
Get the content of the value attribute
of the first matched element
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