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dplyr summarise: Equivalent of “.drop=FALSE” to keep groups with zero length in output
...the same result using xtabs, for example:
using dplyr:
df %>%
xtabs(formula = ~ b) %>%
as.data.frame()
or shorter:
as.data.frame(xtabs( ~ b, df))
result (equal in both cases):
b Freq
1 1 6
2 2 6
3 3 0
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Is there a way to delete a line in Visual Studio without cutting it?
... LineDelete! Why did they have to name it backwards! It looks like in VS2010 it is bound by default to Ctrl + Shift + L, though.
– JChristian
Sep 17 '10 at 0:58
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Do you have to put Task.Run in a method to make it async?
I'm trying to understand async await in the simplest form. I want to create a very simple method that adds two numbers for the sake of this example, granted, it's no processing time at all, it's just a matter of formulating an example here.
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Why XML-Serializable class need a parameterless constructor
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This is a limitation of XmlSerializer. Note that BinaryFormatter and DataContractSerializer do not require this - they can create an uninitialized object out of the ether and initialize it during deserialization.
Since you are using xml, you might consider using DataContractSeri...
How to add double quotes to a string that is inside a variable?
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answered Oct 11 '10 at 12:01
OdedOded
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Why am I merging “remote-tracking branch 'origin/develop' into develop”?
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
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How do I get the full url of the page I am on in C#
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beercohol
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answered Sep 3 '08 at 5:06
DevelopingChrisDevelopingChris
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How can I remove all objects but one from the workspace in R?
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answered May 31 '11 at 16:01
AndrieAndrie
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How can I delay a method call for 1 second?
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MilianooMilianoo
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3
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How to change font size in Eclipse for Java text editors?
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tested on Version: Indigo Service Release 2 on 12-12-2012 good answer
– shareef
Jan 11 '13 at 12:01
1
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