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Client-server synchronization pattern / algorithm?
...pic => Data Syncing in Core Data Based iOS apps (http://blog.denivip.ru/index.php/2014/04/data-syncing-in-core-data-based-ios-apps/?lang=en)
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How to find out client ID of component for ajax update/render? Cannot find component with expression
...ontainer. See following chapter.
Note: if it happens to contain iteration index like :0:, :1:, etc (because it's inside an iterating component), then you need to realize that updating a specific iteration round is not always supported. See bottom of answer for more detail on that.
Memorize NamingC...
Lock, mutex, semaphore… what's the difference?
...abase), (a relatively short-lived) lock on a system data-structure like an index"
– Peter
Jun 20 '12 at 6:12
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STL or Qt containers?
...May be worth adding to the list the fact that e.g. QVector uses int as its index, thus limiting 31-bit sizes (even on 64-bit systems). Moreover, it can't even store INT_MAX elements of size larger than 1 byte. E.g. the largest .size() I could have of QVector<float> on x86_64 Linux gcc was 5368...
Sort JavaScript object by key
... line) and passes 4 arguments to it:
// accumulator, currentValue, currentIndex and array
.reduce((accumulator, currentValue) => {
// setting the accumulator (sorted new object) with the actual property from old (unsorted) object.
accumulator[currentValue] = testObj[currentValue];
// ret...
Replace Fragment inside a ViewPager
...d is a bit hacky as well, I used this dirty "android:switcher:VIEWPAGER_ID:INDEX" solution but you can also keep track of all fragments of the ViewPager yourself as explained in the second solution on this page.
So here's my code for a ViewPager with 4 ListViews with a detail view shown in the View...
How Python web frameworks, WSGI and CGI fit together
...s
http://docs.djangoproject.com/en/dev/howto/deployment/#howto-deployment-index
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Saving an Object (Data persistence)
...1 — similar to referencing the last element of a sequence via a negative index.
So, instead of writing:
pickle.dump(obj, output, pickle.HIGHEST_PROTOCOL)
You can just write:
pickle.dump(obj, output, -1)
Either way, you'd only have specify the protocol once if you created a Pickler object for...
In Firebase, is there a way to get the number of children of a node without loading all the node dat
...://github.com/firebase/functions-samples/blob/master/child-count/functions/index.js
Update January 2018
The firebase docs have changed so instead of event we now have change and context.
The given example throws an error complaining that event.data is undefined. This pattern seems to work better:...
What is the difference between a strongly typed language and a statically typed language?
...== false) {
// not found
}
The error here is that strpos() returns the index of the match, being 0. 0 is coerced into boolean false and thus the condition is actually true. The solution is to use === instead of == to avoid implicit conversion.
This example illustrates how a combination of impli...