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How do i instantiate a JAXBElement object?
I need to create one of these as the interface requires it...can someone please let me know how to create one, as there doesnt seem to be a c'tor defined?
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What is the worst real-world macros/pre-processor abuse you've ever come across?
What is the worst real-world macros/pre-processor abuse you've ever come across (please no contrived IOCCC answers *haha*)?
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Android: When should I use a Handler() and when should I use a Thread?
When I need something to run asynchronously , such as a long running task or a logic that uses the network, or for whatever reason,
Starting a new Thread and running it works fine.
Creating a Handler and running it works as well.
What's the difference? When should I use each one?
What are the...
How do I make python wait for a pressed key?
...ves you access to a number of functions in the Microsoft Visual C/C++ Runtime Library (MSVCRT)):
import msvcrt as m
def wait():
m.getch()
This should wait for a key press.
Additional info:
in Python 3 raw_input() does not exist
In Python 2 input(prompt) is equivalent to eval(raw_input(prom...
No Main() in WPF?
I am a beginner when it comes to programming but I was sure that one of the universal rules was that a program starts with Main(). I do not see one when I create a WPF project. Is Main() simply named something differently in WPF?
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How to check if a string contains text from an array of substrings in JavaScript?
...} else {
console.log("No match using '" + str + "'");
}
In a comment on the question, Martin asks about the new Array.prototype.map method in ECMAScript5. map isn't all that much help, but some is:
if (substrings.some(function(v) { return str.indexOf(v) >= 0; })) {
// There's at le...
How can I get this ASP.NET MVC SelectList to work?
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This is how I do it
IList<Customer> customers = repository.GetAll<Customer>();
IEnumerable<SelectListItem> selectList =
from c in customers
select new SelectListItem
{
Selected = (c.CustomerID == invoice.CustomerID),
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how to append a list object to another
..., I have two list<T> objects A and B and I want to add all the members of B to the end of A . I've searched a few different sources and haven't found a simple solution (e.i. A.append(B); ) and this surprises me a bit.
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Java Singleton and Synchronization
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Yes, it is necessary. There are several methods you can use to achieve thread safety with lazy initialization:
Draconian synchronization:
private static YourObject instance;
public static synchronized YourObject getInstance() {
if (instance == null) {
...
Comparing numbers in Bash
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In bash, you should do your check in arithmetic context:
if (( a > b )); then
...
fi
For POSIX shells that don't support (()), you can use -lt and -gt.
if [ "$a" -gt "$b" ]; then
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fi
You can get a full list of comparison operators with help test o...