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Prevent row names to be written to file when using write.csv
... that Edouard published on his site
microbenchmark(write.csv(data, "baseR_file.csv", row.names = F),
write_csv(data, "readr_file.csv"),
fwrite(data, "datatable_file.csv"),
times = 10, unit = "s")
## Unit: seconds
## ...
How do I find where JDK is installed on my windows machine?
...f you have a JDK installed, the Path is displayed,
for example: C:\Program Files\Java\jdk1.6.0_30\bin\javac.exe
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How do you delete all text above a certain line
...
dgg
will delete everything from your current line to the top of the file.
d is the deletion command, and gg is a movement command that says go to the top of the file, so when used together, it means delete from my current position to the top of the file.
Also
dG
will delete all lines at ...
How do I record audio on iPhone with AVAudioRecorder?
...s writing crashes your application. This is why I am removing the recorded file through the File Manager. When recording is done, I save the recorded audio as NSData in the currently edited object using KVC.
#define DOCUMENTS_FOLDER [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"]
...
Open directory dialog
I want the user to select a directory where a file that I will then generate will be saved. I know that in WPF I should use the OpenFileDialog from Win32, but unfortunately the dialog requires file(s) to be selected - it stays open if I simply click OK without choosing one. I could "hack up" the f...
Reverting part of a commit with git
...you want
$ git commit # Commit those changes
Note: The files you add using git add --patch are the files you want to revert, not the files you want to keep.
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e.printStackTrace equivalent in python
... error 1294 Something awful happened!
Traceback (most recent call last):
File "b.py", line 22, in f
g()
File "b.py", line 14, in g
1/0
ZeroDivisionError: integer division or modulo by zero
(From http://blog.tplus1.com/index.php/2007/09/28/the-python-logging-module-is-much-better-than-p...
How to execute Python scripts in Windows?
... about how Windows invokes the program. First is to find out what kind of file Windows thinks it is:
C:\>assoc .py
.py=Python.File
Next, you need to know how Windows is executing things with that extension. It's associated with the file type "Python.File", so this command shows wha...
“Diff” an image using ImageMagick
... the first one shows the visual difference between the two images as a PNG file, the second one as a PDF.
The resulting diff file displays all pixels which are different in red color. The ones which are unchanged appear white.
Short and sweet.
Note, your images need not be the same type. You ca...
How to use Git?
...age the changes
Staging is process of making Git to track our newly added files. For example add a file and type git status. You will find the status that untracked file.
So to stage the changes use git add filename.
If now type git status, you will find that new file added for tracking.
You can ...