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Difference between socket and websocket?
...kets in their implementation. Websockets are based on a standard protocol (now in final call, but not yet final) that defines a connection "handshake" and message "frame." The two sides go through the handshake procedure to mutually accept a connection and then use the standard message format ("fram...
Should I use string.isEmpty() or “”.equals(string)?
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Thank you for the explanation. Now I know why to favor "".equals(str) over str.equals("")! I was always wondering why others use this so often, but didn't take null values into account. Great :-)
– Peter Wippermann
De...
Statistics: combinations in Python
... N and K due to floating point precision. But we can fix that - see above, now it should not err for big numbers
– Nas Banov
Sep 17 '13 at 1:17
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This project references NuGet package(s) that are missing on this computer
I have an ASP.NET MVC5 application that worked yesterday and now I am getting this error when I try to build:
18 Answers
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Sorting multiple keys with Unix sort
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Whoops! Now I have to fix a script because earlier I only saw the first answer above...good thing I haven't depended on the script output yet....
– Wildcard
Nov 5 '15 at 6:22
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Combining Multiple Commits Into One Prior To Push
...ne with. So it has to be picked or 'p'. Use 'Esc' to exit insert mode.
3) Now, save the editor with the following command.
:wq
When you save that, you have a single commit that introduces the changes of all three previous commits.
Hope this will help you.
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Android 4.3 Bluetooth Low Energy unstable
...e/x1y4tEHDwk0
The issue and work around described below is probably fixed now by OS updates
Work around: I could "stabilize" my app doing that...
I provide the user a setting "Restart Bluetooth". If that setting is enabled, I restart Bluetooth at some points that indicate the begin of BLE stack...
Django Server Error: port is already in use
... 0 0 :::3306 :::* LISTEN
So now just close the port in which Django/python running already by killing the process associated with it.
kill -9 PID
in my case
kill -9 6599
Now run your Django app.
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Performance surprise with “as” and nullable types
...a few machine code instructions. The cast is also easy, the JIT compiler knows the location of the value bits in the object and uses them directly. No copying or conversion occurs, all machine code is inline and takes but about a dozen instructions. This needed to be really efficient back in .NET...
Is there a TRY CATCH command in Bash
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May I know how to log the exception? Normally in java code, we can use system.out.log(e), but how about in shell?
– Panadol Chong
Feb 13 '19 at 6:57
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