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Database sharding vs partitioning
... databases. Sharding is one specific type of partitioning, part of what is called horizontal partitioning.
Here you replicate the schema across (typically) multiple instances or servers, using some kind of logic or identifier to know which instance or server to look for the data. An identifier of t...
How to use the same C++ code for Android and iOS?
...ring;
}
@end
This class has the responsibility to convert CPP types and calls to Obj-C types and calls. It is not mandatory once you can call CPP code on any file you want on Obj-C, but it helps to keep the organisation, and outside your wrapper files you maintain a complete Obj-C styled code, on...
_DEBUG vs NDEBUG
...lar as This is the same as the Standard C library.
In C89 (C programmers called this standard as standard C) in "4.2 DIAGNOSTICS" section it was said
http://port70.net/~nsz/c/c89/c89-draft.html
If NDEBUG is defined as a macro name at the point in the source file
where is included, the ...
What is meant by “managed” vs “unmanaged” resources in .NET?
...
// Code to use connection here
}
As this ensures that .Dispose() is called on the connection object, ensuring that any unmanaged resources are cleaned up.
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Async image loading from url inside a UITableView cell - image changes to wrong image while scrollin
...r. updateCell.poster.image = nil to cell.poster.image = nil; updateCell is called before it's declared.
– Segev
May 21 '13 at 7:09
1
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What's the difference between setWebViewClient vs. setWebChromeClient?
...
From the source code:
// Instance of WebViewClient that is the client callback.
private volatile WebViewClient mWebViewClient;
// Instance of WebChromeClient for handling all chrome functions.
private volatile WebChromeClient mWebChromeClient;
// SOME OTHER SUTFFF.......
/**
* Set the WebVie...
Global and local variables in R
... <<-"
> bar
[1] "global"
The first time we print bar we haven't called foo yet so it should still be global - this makes sense. The second time we print it's inside of foo before calling baz so the value "in foo" makes sense. The following is where we see what <<- is actually doin...
What is difference between Collection.stream().forEach() and Collection.forEach()?
...rable.forEach takes the collection's lock once and holds it across all the calls to the action method. The Stream.forEach call uses the collection's spliterator, which does not lock, and which relies on the prevailing rule of non-interference. The collection backing the stream could be modified duri...
Django Passing Custom Form Parameters to Formset
.... They do the same thing, except that functools.partial returns a distinct callable type instead of a regular Python function, and the partial type does not bind as an instance method, which neatly solves the problem this comment thread was largely devoted to debugging.
– Carl ...
How to overcome TypeError: unhashable type: 'list'
...ionary keys during a dictionary lookup quickly.
Internally, hash() method calls __hash__() method of an object which are set by default for any object.
Converting a nested list to a set
>>> a = [1,2,3,4,[5,6,7],8,9]
>>> set(a)
Traceback (most recent call last):
File "<stdin...