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How to know if other threads have finished?
...ompleted.
How to implement Idea #5? Well, one way is to first create an interface:
public interface ThreadCompleteListener {
void notifyOfThreadComplete(final Thread thread);
}
then create the following class:
public abstract class NotifyingThread extends Thread {
private final Set<T...
How do you dynamically add elements to a ListView on Android?
...; adapter;
//RECORDING HOW MANY TIMES THE BUTTON HAS BEEN CLICKED
int clickCounter=0;
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
adapter=new ArrayAdapter<String>(this,
android.R.la...
Formatting a number with exactly two decimals in JavaScript
...
This is a bad idea in most situations, it converts the number to a string or float point number in some cases.
– Ash Blue
Jun 20 '12 at 15:19
80
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Pandas every nth row
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I'd use iloc, which takes a row/column slice, both based on integer position and following normal python syntax.
df.iloc[::5, :]
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Mechanisms for tracking DB schema changes [closed]
...a database-specific flavour of SQL. Your Ruby migration code ends up being converted into the DDL specific to your current database; this makes switching database platforms very easy.
For every change you make to the database, you write a new migration. Migrations typically have two methods: an "u...
jQuery selector for the label of a checkbox
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Use .text() to convert object to string: alert($("label[for='comedyclubs']").text());
– Loren
Dec 12 '12 at 18:56
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How to create a colored 1x1 UIImage on the iPhone dynamically?
...with color: UIColor) -> UIImage {
let rect = CGRect(origin: CGPoint(x: 0, y:0), size: CGSize(width: 1, height: 1))
UIGraphicsBeginImageContext(rect.size)
let context = UIGraphicsGetCurrentContext()!
context.setFillColor(color.cgColor)
context.fill(rect)
...
How to negate the whole regex?
...d Lookbehind Zero-Width Assertions
Flavor comparison
See also
How do I convert CamelCase into human-readable names in Java?
Regex for all strings not containing a string?
A regex to match a substring that isn’t followed by a certain other substring.
More examples
These are attempts to come ...
What effect(s) can the virtual keyword have in Entity Framework 4.1 POCO Code First?
...ion<T> only.
They cannot be a concrete
implementation or another interface
that derives from ICollection<T> (a
difference from the Deferred Loading
proxy)
Another useful link describing this is MSDN's Requirements for Creating POCO Proxies.
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What is the proper way to check if a string is empty in Perl?
...== and != operators are numeric comparison operators. They will attempt to convert both operands to integers before comparing them.
See the perlop man page for more information.
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