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How to use timeit module
...tatements. So, if you want to test sorting, some care is required so that one pass at an in-place sort doesn't affect the next pass with already sorted data (that, of course, would make the Timsort really shine because it performs best when the data already partially ordered).
Here is an example o...
Push Notifications in Android Platform
...recated) Firebase Cloud Messaging
It will work on Android >= 2.2 (on phones that have the Play Store).
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Django connection to PostgreSQL: “Peer authentication failed”
...My settings.py did not have a HOST for MySQL database, but I needed to add one for PostgreSQL to work.
In my case, I added localhost to the HOST setting and it worked.
Here is the DATABASES section from my settings.py.
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgr...
How can I develop for iPhone using a Windows development machine?
Is there any way to tinker with the iPhone SDK on a Windows machine? Are there plans for an iPhone SDK version for Windows?
...
How to concatenate two MP4 files using FFmpeg?
...
For a oneliner use: ffmpeg -safe 0 -f concat -i <(find . -type f -name '*' -printf "file '$PWD/%p'\n" | sort) -c copy output.mkv (mkv accepts more codecs than mp4, but you could also try it with mp4). The -safe 0 is for recent f...
What does the function then() mean in JavaScript?
...ipt has been with callbacks.
Say we had to make three calls to the server, one after the other, to set up our
application. With callbacks, the code might look something like the following (assuming
a xhrGET function to make the server call):
// Fetch some server configuration
xhrGET('/api/serve...
Why do function pointer definitions work with any number of ampersands '&' or asterisks '*'?
...he address of foo, which results in a function pointer pointing at foo, as one would expect.
– Dennis Zickefoose
Aug 1 '11 at 0:59
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Does async(launch::async) in C++11 make thread pools obsolete for avoiding expensive thread creation
...determined that the overhead of function call in a new thread vs. a normal one is enormous. The overhead for creating a thread to handle a function call is something like 10000 or more times slower than a plain function call. So, if you're issuing a lot of small function calls, a thread pool might b...
How do you use Mongoose without defining a schema?
... Sorry to reply on such an old answer. Just wanted to add this in case someone comes across the same thing. https://mongoosejs.com/docs/guide.html#toJSON
– Chris
Apr 8 '19 at 15:18
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ICollection Vs List in Entity Framework
...Ixxx features still escape my understanding! You have made sense, however, one last thing that is annoying me, if the other Ixx's inherit IEnumerable, how does it add to the IEnumerable if an Ienumerable is read only? ... If it is too complex, don't worry, when I have a bit of time, I will try to fi...