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How can I convert a datetime object to milliseconds since epoch (unix time) in Python?
... simplest way to do this is
import datetime
epoch = datetime.datetime.utcfromtimestamp(0)
def unix_time_millis(dt):
return (dt - epoch).total_seconds() * 1000.0
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Redirect to an external URL from controller action in Spring MVC
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You can use the RedirectView. Copied from the JavaDoc:
View that redirects to an absolute, context relative, or current request relative URL
Example:
@RequestMapping("/to-be-redirected")
public RedirectView localRedirect() {
RedirectView redirectView ...
Error in exception handler. - Laravel
...
Then make sure directory permissions are 775.
chmod -R 775 app/storage
From the Laravel web site:
Laravel may require one set of permissions to be configured: folders
within app/storage require write access by the web server.
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How to set timer in android?
...t3;
long starttime = 0;
//this posts a message to the main thread from our timertask
//and updates the textfield
final Handler h = new Handler(new Callback() {
@Override
public boolean handleMessage(Message msg) {
long millis = System.currentTimeMillis() -...
What are some uses of template template parameters?
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Here is a simple example taken from 'Modern C++ Design - Generic Programming and Design Patterns Applied' by Andrei Alexandrescu:
He uses a classes with template template parameters in order to implement the policy pattern:
// Library code
template <t...
What does 'low in coupling and high in cohesion' mean
...o visualize the whole picture will be helpful:
The screenshot was taken from Coursera.
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How is a CRC32 checksum calculated?
...-student or engineer I challenge to break this down. Everyone will benefit from this analysis.
So to work out a full example:
Original message : 1101011011
Polynomial of (W)idth 4 : 10011
Message after appending W zeros : 11010110110000
Now we divide the augm...
What is a “bundle” in an Android application
...ctivity(in);
In the second activity, we have to access the data passed from the first activity
Intent in = getIntent();
Now, you need to get the data from the bundle
Bundle b = in.getExtras();
Finally, get the value of the string data associated with key named "myname"
String s = b.getStr...
Android - how do I investigate an ANR?
...include using sockets, locks, thread sleeps, and other blocking operations from within the event thread. You should make sure these all happen in separate threads. If nothing seems the problem, use DDMS and enable the thread view. This shows all the threads in your application similar to the trace y...
How do I look inside a Python object?
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The answer from @Brian below shows you how to also view the source code of various python objects from within python. That is what I was originally searching for and I'm sure I won't be alone. (It might be worth including a reference to...