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Remove duplicated rows using dplyr
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Note: dplyr now contains the distinct function for this purpose.
Original answer below:
library(dplyr)
set.seed(123)
df <- data.frame(
x = sample(0:1, 10, replace = T),
y = sample(0:1, 10, replace = T),
z = 1:10
)
One appr...
Qt: *.pro vs *.pri
...ct Linker Files, but as an end user, you do not need to deal with that for now.
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How to write a Ruby switch statement (case…when) with regex and backreferences?
I know that I can write a Ruby case statement to check a match against a regular expressions.
However, I'd like to use the match data in my return statement. Something like this semi-pseudocode:
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Emacs in Windows
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I use EmacsW32, it works great. EDIT: I now use regular GNU Emacs 24, see below.
See its EmacsWiki page for details.
To me, the biggest advantage is that:
it has a version of emacsclient that starts the Emacs server if no server is running (open all your files ...
How to break out or exit a method in Java?
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Will this work for exiting from a constructor? I know it's a bit strange but I need this hack.
– stillanoob
Oct 21 '16 at 12:35
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How do I apply CSS3 transition to all properties except background-position?
...me for me. It's still working in IE11 but as of this week the all property now overrides anything later on the line.
– cirrus
Feb 24 '14 at 21:44
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Remove Item from ArrayList
I have an ArrayList suppose list , and it has 8 items A-H and now I want to delete 1,3,5 position Item stored in int array from the list how can I do this.
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How do I write the 'cd' command in a makefile?
...t everybody works on legacy makefiles, and even then this answer is about knowing this possibility exists.
– Chnossos
May 20 '17 at 14:52
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Could not find stored procedure 'dbo.aspnet_CheckSchemaVersion'
... -S DBServerName -U DBLogin -P DBPassword -A all -d DBName
If you don't know where to run above command then you can simply run 'aspnet_regsql.exe' executable file.
In order to locate this file open your RUN Command Box by pressing Windows Key + r and put below command in that %windir%\Microsoft....
Class constants in python
...mon in all subclasses. Is there a way to do it with friendly syntax?
Right now I use:
4 Answers
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