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byte + byte = int… why?
...oing the conversion back from the result to a byte automatically could be done, but would result in performance penalties in the case where you don't actually want that behaviour.
I think this is mentioned in one of the annotated C# standards. Looking...
EDIT: Annoyingly, I've now looked through t...
How do I save a stream to a file in C#?
...is seems to be something people want to see... if you do just want to copy one stream to another (e.g. to a file) use something like this:
/// <summary>
/// Copies the contents of input to output. Doesn't close either stream.
/// </summary>
public static void CopyStream(Stream input, St...
Eclipse - no Java (JRE) / (JDK) … no virtual machine
...lipse will by default try to launch with the default "java.exe" (the first one referenced by your PATH)
Three things to remember:
"Installing" a JRE or a JDK can be as simple as unzipping or copying it from another computer: there is no special installation steps, and you can have as many differe...
Is 23,148,855,308,184,500 a magic number, or sheer chance?
News reports such as this one indicate that the above number may have arisen as a programming bug.
7 Answers
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How to create GUID / UUID?
...IDs must be of the form "xxxxxxxx-xxxx-Mxxx-Nxxx-xxxxxxxxxxxx", where x is one of [0-9, a-f] M is one of [1-5], and N is [8, 9, a, or b]
Use of a low-quality source of randomness (such as Math.random)
Thus, developers writing code for production environments are encouraged to use a rigorous, well-...
How can I reload .emacs after changing it?
...
Very strange that the very convenient
M-x eval-buffer
is not mentioned here.
It immediately evaluates all code in the buffer, its the quickest method, if your .emacs is idempotent.
share
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What are Aggregates and PODs and how/why are they special?
...s, the rest are value-initialized. If it is impossible to value-initialize one of the members which were not explicitly initialized, we get a compile-time error. If there are more initializers than necessary, we get a compile-time error as well.
struct X
{
int i1;
int i2;
};
struct Y
{
char c...
How do you cast a List of supertypes to a List of subtypes?
...almost works; but it doesn't work because you can't cast a generic type of one parameter to another. However, you can cast through an intermediate wildcard type and it will be allowed (since you can cast to and from wildcard types, just with an unchecked warning):
List<TestB> variable = (List...
How to define optional methods in Swift protocol?
...rm to such protocol. It's always either concrete implementation or default one. This is how "interfaces" or "contracts" behave in other languages.
Disadvantages
For non-Void requirements, you need to have a reasonable default value, which is not always possible. However, when you encounter this ...
Where does Java's String constant pool live, the heap or the stack?
..., the exact location of the string pool is not specified and can vary from one JVM implementation to another.
It is interesting to note that until Java 7, the pool was in the permgen space of the heap on hotspot JVM but it has been moved to the main part of the heap since Java 7:
Area: HotSpot
...