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Database cluster and load balancing
What is database clustering? If you allow the same database to be on 2 different servers how do they keep the data between synchronized. And how does this differ from load balancing from a database server perspective?
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What is the difference between concurrency, parallelism and asynchronous methods?
...arallel on separate threads. However, asynchronous methods run in parallel but on the same 1 thread. How is this achieved? Also, what about parallelism?
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Forward declaring an enum in C++
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The reason the enum can't be forward declared is that without knowing the values, the compiler can't know the storage required for the enum variable. C++ Compiler's are allowed to specify the actual storage space based on the size necessary to contai...
Default implementation for Object.GetHashCode()
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namespace System {
public class Object {
[MethodImpl(MethodImplOptions.InternalCall)]
internal static extern int InternalGetHashCode(object obj);
public virtual int GetHashCode() {
return InternalGetHashCode(t...
Where does the “flatmap that s***” idiomatic expression in Scala come from?
What is so powerful about flatmap that it deserves such a place in the Scala folklore?
4 Answers
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Can you add new statements to Python's syntax?
...g a new statement to Python, quoted here:
This article is an attempt to better understand how the front-end of Python works. Just reading documentation and source code may be a bit boring, so I'm taking a hands-on approach here: I'm going to add an until statement to Python.
All the coding for t...
How to prevent multiple instances of an Activity when it is launched with different Intents
I've come across a bug in my application when it is launched using the "Open" button on the Google Play Store app (previously called Android Market). It seems that launching it from the Play Store uses a different Intent than launching it from the phone's application menu of icons. This is leadi...
Empty arrays seem to equal true and false at the same time
Empty arrays are true but they're also equal to false.
9 Answers
9
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How to return a file using Web API?
I am using ASP.NET Web API . I want to download a PDF with C# from the API (that the API generates).
5 Answers
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How to reuse an ostringstream?
I'd like to clear out and reuse an ostringstream (and the underlying buffer) so that my app doesn't have to do as many allocations. How do I reset the object to its initial state?
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