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What makes JNI calls slow?
...ime compiled for this specific machine -- they're already compiled.
A Java array may be copied for access in native code, and later copied back. The cost can be linear in the size of the array. I measured JNI copying of a 100,000 array to average about 75 microseconds on my Windows desktop, and 82 m...
jQuery: count number of rows in a table
...
It has a length property because it's an array. I don't know enough of the history of jQuery to know whether the jQuery object always extended an array.
– tvanfosson
Nov 19 '09 at 11:35
...
Difference between Divide and Conquer Algo and Dynamic Programming
...ult of each sub-problem is stored in a table ( generally implemented as an array or a hash table) for future references. These sub-solutions may be used to obtain the original solution and the technique of storing the sub-problem solutions is known as memoization.
You may think of DP = recursion + ...
Moving UITabBarItem Image down?
...
This worked for me
Swift 4
let array = tabBarController?.customizableViewControllers
for controller in array! {
controller.tabBarItem.imageInsets = UIEdgeInsetsMake(5, 0, -5, 0)
}
...
Select mySQL based only on month and year
...ust, explode value by dash $Period = explode('-',$_POST['period']);
Get array from explode value :
Array
(
[0] => 2012
[1] => 02
)
Put value in SQL Query:
SELECT * FROM projects WHERE YEAR(Date) = '".$Period[0]."' AND Month(Date) = '".$Period[0]."';
Get Result b...
How do I serialize an object and save it to a file in Android?
...
I've tried this 2 options (read/write), with plain objects, array of objects (150 objects), Map:
Option1:
FileOutputStream fos = context.openFileOutput(fileName, Context.MODE_PRIVATE);
ObjectOutputStream os = new ObjectOutputStream(fos);
os.writeObject(this);
os.close();
Option2:
...
Using NumberPicker Widget with Strings
...
NumberPicker numberPicker = new NumberPicker(this);
String[] arrayString= new String[]{"hakuna","matata","timon","and","pumba"};
numberPicker.setMinValue(0);
numberPicker.setMaxValue(arrayString.length-1);
numberPicker.setFormatter(new NumberPicker.Formatter() {
@Override
public S...
Get local IP address
...sses you could simply manipulate the original function to always return an array instead of a single string. For example:
public static string[] GetAllLocalIPv4(NetworkInterfaceType _type)
{
List<string> ipAddrList = new List<string>();
foreach (NetworkInterface item in NetworkI...
How to format a DateTime in PowerShell
...ts(),
$d = Get-Date
$d.GetDateTimeFormats()
This outputs a large string-array of formatting styles for the date-value. You can then pick one of the elements of the array via the []-operator, e.g.,
PS C:\> $d.GetDateTimeFormats()[12]
Dienstag, 29. November 2016 19.14
...
What is the easiest way to remove the first character from a string?
...[how_many..-1]
shifted
end
alias_method :shift!, :shift
end
class Array
def eat!(how_many = 1)
self.replace self[how_many..-1]
end
end
puts RUBY_VERSION
STR = "[12,23,987,43"
Benchmark.bm(7) do |b|
b.report('[0]') { N.times { "[12,23,987,43"[0] = '' } }
b.report('sub') { N.ti...