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Actual meaning of 'shell=True' in subprocess
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As an aside, you very often want to avoid Popen if one of the simpler wrappers in the subprocess package does what you want. If you have a recent enough Python, you should probably use subprocess.run.
With check=True it will fail if the command you ran failed.
With stdout=subprocess.PIPE it wil...
Android SharedPreference security
...e in the filesystem on the device. They are, by default, stored within the app's data directory with filesystem permissions set that only allow the UID that the specific application runs with to access them. So, they are private in so much as Linux file permissions restrict access to them, the same ...
Iterating through directories with Python
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C:/Users/sid/Desktop/test\src\app/cool.txt C:/Users/sid/Desktop/test\src\app/woohoo.txt Ya in the open statement of my code, i think i have to give the absolute path to the file. import os rootdir ='C:/Users/spemmara/Desktop/test/src/app/' for subdir,...
how to permit an array with strong parameters
I have a functioning Rails 3 app that uses has_many :through associations which is not, as I remake it as a Rails 4 app, letting me save ids from the associated model in the Rails 4 version.
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Nodejs - Redirect url
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The logic of determining a "wrong" url is specific to your application. It could be a simple file not found error or something else if you are doing a RESTful app. Once you've figured that out, sending a redirect is as simple as:
response.writeHead(302, {
'Location': 'your/404/pat...
unable to print object ('po') in xcode6 beta 6 osx swift project: (Error in auto-import: failed to g
...>:1:9: note: in file included from <module-includes>:1:
#import "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/include/libxml2/libxml/tree.h"
^
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/S...
How to draw a line in android
...int);
}
}
The activity to start it:
StartDraw.java
import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
public class StartDraw extends Activity {
DrawView drawView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCre...
Using Rails 3.1 assets pipeline to conditionally use certain css
I’m in the process of building my first solo Rails app using Rails 3.1.rc5. My problem is that I want to have my site render the various CSS files conditionally. I’m using Blueprint CSS and I’m trying to have sprockets/rails render screen.css most of the time, print.css only when printing,...
RabbitMQ and relationship between channel and connection
...This way you can use as many (virtual) connections as you want inside your application without overloading the broker with TCP connections.
You can use one Channel for everything. However, if you have multiple threads, it's suggested to use a different Channel for each thread.
Channel thread-safet...
Disable browser's back button
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Thanks dude, the thing is that if you're building an AJAX app, the cost-benefit tradeoff between disabling the back button, or going through your app and working out the appropriate back action for each and every possible scenario, may tend towards disabling the back button being th...