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How to drop a list of rows from Pandas dataframe?
...is huge, and the number of rows to drop is large as well, then simple drop by index df.drop(df.index[]) takes too much time.
In my case, I have a multi-indexed DataFrame of floats with 100M rows x 3 cols, and I need to remove 10k rows from it. The fastest method I found is, quite counterintuitivel...
app-release-unsigned.apk is not signed
...
But why have I to do that? On the guide they say "By default, there is a debug configuration that is setup to use a debug keystore, with a known password and a default key with a known password.". I don't have any problems with other applications.
– and...
How to format a Java string with leading zero?
...s,
String.format("%0"+length+"d",0)
This can be applied to your problem by dynamically adjusting the number of leading 0's in a format string:
public String leadingZeros(String s, int length) {
if (s.length() >= length) return s;
else return String.format("%0" + (length-s.length()) ...
How to change credentials for SVN repository in Eclipse?
... the cached information.
SVNKit caches information in the Eclipse keyring. By default this is a file named .keyring that is stored in the root of the Eclipse configuration folder. Both of these values can be overriden with command line options. To clear the cache, you have to delete the file. Eclips...
Rename multiple files based on pattern in Unix
...ems):
ls | cut -c4- | xargs -I§ mv fgh§ jkl§
The § may be replaced by anything you find convenient. You could do this with find -exec too but that behaves subtly different on many systems, so I usually avoid that
for f in fgh*; do mv "$f" "${f/fgh/jkl}";done
Crude but effective as they say...
How do I register a DLL file on Windows 7 64-bit?
...hen you run Regsvr32 to register a DLL,
you are using the 64-bit version by default.
Solution from that article:
To resolve this issue, run Regsvr32.exe from the %SystemRoot%\Syswow64
folder. For example, type the following commands to register the DLL:
cd \windows\syswow64 regsvr32 c...
Visual Studio setup problem - 'A problem has been encountered while loading the setup components. Ca
...tudio 9.0\Microsoft Visual Studio 2008... as the source disc when prompted by the installer. Reference: blogs.msdn.com/b/heaths/archive/2009/02/02/…
– Anton
May 22 '13 at 19:02
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Extracting extension from filename in Python
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[-1] to get last item of items that splitted by dot. Example: "my.file.name.js".split('.') => ['my','file','name','js]
– Murat Çorlu
Aug 21 '13 at 8:27
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How can I trim leading and trailing white space?
...d use:
paste(myDummy$country)
which will show you the strings surrounded by quotation marks (") making white spaces easier to spot.
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getting the ng-object selected with ng-change
...thout specifying a model? I get this error: Controller 'ngModel', required by directive 'select', can't be found!
– fer
Mar 29 '14 at 10:30
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