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What is the difference between concurrency, parallelism and asynchronous methods?
...thing.
Differences between concurrency vs. parallelism
Now let’s list down remarkable differences between concurrency and parallelism.
Concurrency is when two tasks can start, run, and complete in overlapping time periods. Parallelism is when tasks literally run at the same time, eg. on a mult...
How to listen for changes to a MongoDB collection?
...ry 10, 2018 - Release 3.6
*EDIT: I wrote an article about how to do this https://medium.com/riow/mongodb-data-collection-change-85b63d96ff76
https://docs.mongodb.com/v3.6/changeStreams/
It's new in mongodb 3.6
https://docs.mongodb.com/manual/release-notes/3.6/ 2018/01/10
$ mongod --versio...
Android Fragments. Retaining an AsyncTask during screen rotation or configuration change
...ed by Fragment.getId(). You can also find out if a fragment is being torn down for a config change through Fragment.getActivity().isChangingConfigurations(). So, at the point where you would decide to stop your AsyncTask (in onStop() or onDestroy() most likely), you could for example check if the ...
How to verify Facebook access token?
...
You can simply request https://graph.facebook.com/me?access_token=xxxxxxxxxxxxxxxxx if you get an error, the token is invalid. If you get a JSON object with an id property then it is valid.
Unfortunately this will only tell you if your token is v...
Best way to structure a tkinter application? [closed]
...t easier to organize your code. In a procedural style you have to code top-down, defining functions before using them, etc. With this method you don't since you don't actually create the main window until the very last step. I prefer inheriting from tk.Frame just because I typically start by creatin...
How do I set up curl to permanently use a proxy? [closed]
...figuration:
export http_proxy http://proxy.server.com:3128
For proxying HTTPS requests, set https_proxy as well.
Curl also allows you to set this in your .curlrc file (_curlrc on Windows), which you might consider more permanent:
http_proxy=http://proxy.server.com:3128
...
How to replace plain URLs with links?
...ern1, replacePattern2, replacePattern3;
//URLs starting with http://, https://, or ftp://
replacePattern1 = /(\b(https?|ftp):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/gim;
replacedText = inputText.replace(replacePattern1, '<a href="$1" target="_blank">$1</a&g...
Changed GitHub password, no longer able to push back to the remote
...e or remote URL, you can take a look at the following Git documentation:-
https://help.github.com/articles/setting-your-username-in-git/
https://help.github.com/articles/changing-a-remote-s-url/
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Implicit type conversion rules in C++ operators
... If you promoted to int, you would get 600, which would then be implicitly down cast into an unsigned char, which would wrap modulo 256, thus giving a final result of 88. If you did no such promotions,you'd have to wrap between the first two additions, which would reduce the problem from 200 + 200 +...
Git push existing repo to a new and different remote repo server?
...
There is a deleted answer on this question that had a useful link: https://help.github.com/articles/duplicating-a-repository
The gist is
0. create the new empty repository (say, on github)
1. make a bare clone of the repository in some temporary location
2. change to the temporary location...