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How to create GUID / UUID?
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Actually, the RFC allows for UUIDs that are created from random numbers. You just have to twiddle a couple of bits to identify it as such. See section 4.4. Algorithms for Creating a UUID from Truly Random or Pseudo-Random Numbers: rfc-archive.org/getrfc.php?rfc=4122
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Most efficient way to concatenate strings?
...s. This answer is incorrect, there are plenty of better answers to choose from
– csauve
Jan 12 '11 at 17:56
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Prevent multiple instances of a given app in .NET?
In .NET, what's the best way to prevent multiple instances of an app from running at the same time? And if there's no "best" technique, what are some of the caveats to consider with each solution?
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Can JSON start with “[”?
From what I can read on json.org , all JSON strings should start with { (curly brace), and [ characters (square brackets) represent an array element in JSON.
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How can I extend typed Arrays in Swift?
...a while trying different things the solution seems to remove the <T> from the signature like:
extension Array {
func find(fn: (T) -> Bool) -> [T] {
var to = [T]()
for x in self {
let t = x as T;
if fn(t) {
to += t
}...
How to visualize an XML schema? [closed]
...d line java application xsdvi creates an interactive diagram in SVG format from an XML Schema Definition. The generated SVG file can be displayed by a modern web browser where the user can expand and collapse the tree by mouse clicking.
Here is an example of a generated diagram
http://xsdvi.source...
Favorite way to create an new IEnumerable sequence from a single value?
I usually create a sequence from a single value using array syntax, like this:
4 Answers
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Why does this Java program terminate despite that apparently it shouldn't (and didn't)?
...hose 4 write operations can be freely reordered by the compiler / JVM.
So from the perspective of the reading thread, it is a legal execution to read x with its new value but y with its default value of 0 for example. By the time you reach the println statement (which by the way is synchronized and...
How do I access the ModelState from within my View (aspx page)?
How do I access the ModelState from within my View (aspx page)?
1 Answer
1
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When to use an object instance variable versus passing an argument to the method
...f a class. Think of these as adjectives of the object that will be created from your class. If your instance data can be used to help describe the object, then it's probably safe to bet it's a good choice for instance data.
Local variables are used within the scope of methods to help them complete t...