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How to check if Location Services are enabled?
...led)
.setPositiveButton(R.string.open_location_settings, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface paramDialogInterface, int paramInt) {
context.startActivity(new Intent(Settings.ACTION_LOCATION_SOURCE_SETTIN...
For loop example in MySQL
...
drop table if exists foo;
create table foo
(
id int unsigned not null auto_increment primary key,
val smallint unsigned not null default 0
)
engine=innodb;
drop procedure if exists load_foo_test_data;
delimiter #
create procedure load_foo_test_data()
begin
declare v_max...
Do Java arrays have a maximum size?
...ugh it's very easy to test.
In a recent HotSpot VM, the correct answer is Integer.MAX_VALUE - 5. Once you go beyond that:
public class Foo {
public static void main(String[] args) {
Object[] array = new Object[Integer.MAX_VALUE - 4];
}
}
You get:
Exception in thread "main" java.lang.Ou...
Changing Font Size For UITableView Section Headers
...
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
In Swift:
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView?
Try something like this:
In Objective-C:
- (UIView *)tableView:(UITableView *)tableView viewForHeade...
How to get the ThreadPoolExecutor to increase threads to max before queueing?
...ionHandler will be called. It is the handler which then does the put(...) into the queue.
It certainly is strange to write a queue where offer(...) can return false and put() never blocks so that's the hack part. But this works well with TPE's usage of the queue so I don't see any problem with do...
How do you rotate a two dimensional array?
...
Here it is in C#
int[,] array = new int[4,4] {
{ 1,2,3,4 },
{ 5,6,7,8 },
{ 9,0,1,2 },
{ 3,4,5,6 }
};
int[,] rotated = RotateMatrix(array, 4);
static int[,] RotateMatrix(int[,] matrix, int n) {
int[,] ret = new int[n, n];...
Implementation difference between Aggregation and Composition in Java
... performs its functions through an Engine, but the Engine is not always an internal part of the Car. Engines may be swapped, or even completely removed. Not only that, but the outside world can still have a reference to the Engine, and tinker with it regardless of whether it's in the Car.
...
Transpose/Unzip Function (inverse of zip)?
I have a list of 2-item tuples and I'd like to convert them to 2 lists where the first contains the first item in each tuple and the second list holds the second item.
...
How does the algorithm to color the song list in iTunes 11 work? [closed]
...ll with distance in the RGB color space.
Therefore, I wrote a function to convert RGB colors (in the form {1,1,1}) to YUV, a color space which is much better at approximating color perception:
(EDIT: @cormullion and @Drake pointed out that Mathematica's built-in CIELAB and CIELUV color spaces woul...
Collection was modified; enumeration operation may not execute
...omic operation. What's even funnier, ToList bascially does its own foreach internally to copy items into a new list instance, meaning you fixed a foreach problem by adding an additional (although quicker) foreach iteration.
– Groo
Jun 15 '15 at 13:26
...