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Why does direction of index matter in MongoDB?
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Fetching nodes from a BTree in order is as simple as moving along each leaf until you run out and then going up a level and down the next branch. It's O(n) Out of order it's much more CPU intensive.
– Jared Kells
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What are Scala context and view bounds?
...o f doesn't need to know about it.
Besides Ordered, the most common usage from the library is handling String and Array, which are Java classes, like they were Scala collections. For example:
def f[CC <% Traversable[_]](a: CC, b: CC): CC = if (a.size < b.size) a else b
If one tried to do t...
Fixed point vs Floating point number
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From my understanding, fixed-point arithmetic is done using integers. where the decimal part is stored in a fixed amount of bits, or the number is multiplied by how many digits of decimal precision is needed.
For example, If...
When should I use a List vs a LinkedList
...ll out into your code.
However, if you need to do many insertions/removals from within a list, it offers constant time. List<T> offers linear time, as extra items in the list must be shuffled around after the insertion/removal.
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What guarantees are there on the run-time complexity (Big-O) of LINQ methods?
...here is the reflected source code (courtesy of ILSpy) for Enumerable.Count from System.Core:
// System.Linq.Enumerable
public static int Count<TSource>(this IEnumerable<TSource> source)
{
checked
{
if (source == null)
{
throw Error.ArgumentNull("sourc...
Why does the C# compiler not fault code where a static method calls an instance method?
...background on why they chose to do things this funny order can be inferred from this blog post by Eric Lippert.
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How to check whether a pandas DataFrame is empty?
...anations and give an indication of what limitations and assumptions apply. From Review
– double-beep
May 28 at 15:45
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What is the difference between shallow copy, deepcopy and normal assignment operation?
... functions the same as a shallow copy in this example. Deep copies differ from shallow copies in that shallow copies will make a new copy of the object itself, but any references inside that object will not themselves be copied. In your example, your list has only integers inside it (which are imm...
How do browsers pause/change Javascript when tab or window is not active?
... does not matter whether the window is out of focus or not.
Edge
Starting from Edge 14, setInterval is capped at 1000ms in inactive tabs. requestAnimationFrame is always paused in inactive tabs.
Safari
Just like Chrome, Safari caps setInterval at 1000ms when the tab is inactive. requestAnimationFr...
Java HTTPS client certificate authentication
...ou get the latest OpenSSL, not version 0.9.8h because that seems to suffer from a bug which doesn't allow you to properly generate PKCS#12 files.
This PKCS#12 file will be used by the Java client to present the client certificate to the server when the server has explicitly requested the client to ...