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Generate random number between two numbers in JavaScript
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a | 0 is also the fastest and most optimized way to convert a string to an integer. It only works with strings containing integers ("444" and "-444"), i.e. no floats/fractions. It yields a 0 for everything that fails. It is one of the main optimizations behind asm.js.
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jQuery Data vs Attr?
...arsed incorrectly in jQuery versions before 1.7.2, and is no longer parsed into a Number as of jQuery 1.8 rc 1.
jQuery 1.8 rc 1 changed the behavior of auto-casting. Before, any format that was a valid representation of a Number would be cast to Number. Now, values that are numeric are only auto-ca...
Spring JPA selecting specific columns
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You can use projections from Spring Data JPA (doc). In your case, create interface:
interface ProjectIdAndName{
String getId();
String getName();
}
and add following method to your repository
List<ProjectIdAndName> findAll();
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SQLiteDatabase.query method
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null, null, orderBy);
// since we have a named column we can do
int idx = c.getColumnIndex("max");
is equivalent to the following raw query
String queryString =
"SELECT column1, (SELECT max(column1) FROM table1) AS max FROM table1 " +
"WHERE column1 = ? OR column1 = ? ORDER BY ...
MySQL InnoDB not releasing disk space after deleting data rows from table
...on the existing table." This implies that you could turn this feature on, "convert" the existing tables to use a separate InnoDB file with the ALTER TABLE command, then OPTIMIZE the table to shrink it's size. However, once you're done you'd have to figure out how to delete the (huge) source InnoDB f...
How is __eq__ handled in Python and in what order?
... A.__eq__, since it exists. Its code includes self.value == other. Since int's don't know how to compare themselves to B's, Python tries invoking B.__eq__ to see if it knows how to compare itself to an int.
If you amend your code to show what values are being compared:
class A(object):
def _...
Add new item in existing array in c#.net
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Arrays in C# are immutable, e.g. string[], int[]. That means you can't resize them. You need to create a brand new array.
Here is the code for Array.Resize:
public static void Resize<T>(ref T[] array, int newSize)
{
if (newSize < 0)
{
throw ...
How to count items in a Go map?
...le examples ported from the now-retired SO documentation:
m := map[string]int{}
len(m) // 0
m["foo"] = 1
len(m) // 1
If a variable points to a nil map, then len returns 0.
var m map[string]int
len(m) // 0
Excerpted from Maps - Counting map elements. The original author was Simone Carletti....
mkdir -p functionality in Python [duplicate]
...swer, but I think there's value in the comment thread below. As such, I'm converting it to a wiki.
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How to make links in a TextView clickable?
...'t need the a href part. The OS will take the string parse it for urls and converts every url to a clickable link. But this won't result in the word google being linked to google.com. It would display www.google.com as link.
– Janusz
Apr 30 '10 at 6:37
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