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How to remove element from an array in JavaScript?
...Benefits of this function is that you can use it on complex array not just string and number.
Some examples :
Remove first element :
// Not very useful but it works
function removeFirst(element, index) {
return index > 0;
}
var arr = [1,2,3,5,6].filter(removeFirst); // [2,3,4,5,6]
Rem...
Curious null-coalescing operator custom implicit conversion behaviour
...lable types; I've tried various permutations with one of the sides being a string, and none of them caused this behaviour.
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Why are Where and Select outperforming just Select?
...e execution of where+select vs select with same results.
static void Main(string[] args)
{
int total = 10000000;
Random r = new Random();
var list = Enumerable.Range(0, total).Select(i => r.Next(0, 5)).ToList();
for (int i = 0; i < 40000...
Microsoft Excel mangles Diacritics in .csv files?
...xcel CSV
* @param array $header
* @param array $data
* @param string $filename
*/
function toCSV($header, $data, $filename) {
$sep = "\t";
$eol = "\n";
$csv = count($header) ? '"'. implode('"'.$sep.'"', $header).'"'.$eol : '';
foreach($data as $line) {
$c...
Run a JAR file from the command line and specify classpath
...pp is the fully qualified name of the class from the JAR that has the main(String[]) method
The jar and dependent jar should have execute permissions.
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What does “where T : class, new()” mean?
..., float, double, DateTime or any other struct (value type).
It could be a string, or any other custom reference type, as long as it has a default or parameter-less constructor.
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EditText maxLines not working - user can still input more lines than set
...eyEvent.ACTION_UP) {
// get EditText text
String text = ((EditText) v).getText().toString();
// find how many rows it cointains
int editTextRowCount = text.split("\\n").length;
// user has input more than limited - le...
Functions that return a function
...can return a true/false value. An integer (1,2,3,4...). You can return a string. You can return a complex object with multiple properties. And you can return a function. a function is just a thing.
In your case, returning b returns the thing, the thing is a callable function. Returning b() re...
How to randomly pick an element from an array
...ould define a method for doing so (Source Avinash R in Random element from string array):
import java.util.Random;
public class RandArray {
private static Random rand = new Random();
private static <T> T randomFrom(T... items) {
return items[rand.nextInt(items.length)];
...
How to replace an entire line in a text file by line number
... are words from the line).
So, if the current line number is 4, print the string "different" but otherwise print the line unchanged.
In AWK, program code enclosed in { } runs once on each input record.
You need to quote the AWK program in single-quotes to keep the shell from trying to interpret t...