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Why does sun.misc.Unsafe exist, and how can it be used in the real world?
...nstantiated by sun.misc.Unsafe, useful for instrumentation
sun.misc.Unsafe.arrayBaseOffset and arrayIndexScale can be used to develop arraylets,a technique for efficiently breaking up large arrays into smaller objects to limit the real-time cost of scan, update or move operations on large objects
ht...
Convert String[] to comma separated string in java
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For android : TextUtils.join(",", stringArrayOfEmails)
– Pratik Butani
May 28 at 9:07
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Algorithm for Determining Tic Tac Toe Game Over
...iag++
if row=n or col=n or diag=n or rdiag=n then winner=true
I'd use an array of char [n,n], with O,X and space for empty.
simple.
One loop.
Five simple variables: 4 integers and one boolean.
Scales to any size of n.
Only checks current piece.
No magic. :)
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Truncate a list to a given number of elements
... public static void main( String args[] ) {
List<String> items = Arrays.asList("1");
List<String> subItems = items.subList(0, min(items.size(), 2));
// Output: [1]
System.out.println( subItems );
items = Arrays.asList("1", "2", "3");
subItems = items.subList(0, ...
How to split a long regular expression into multiple lines in JavaScript?
...egExp is a great way for multiline regular expressions. Instead of joining arrays, you can just use a string concatenation operator: var reg = new RegExp('^([a-' + 'z]+)$','i');
– dakab
Apr 22 '14 at 12:29
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How to improve performance of ngRepeat over a huge dataset (angular.js)?
...it limitTo will be applied to ng-repeat scope, so the result will be a new array which will be passed to ng-repeat, your data array still the same and you can still search all content.
– Bertrand
Aug 4 '15 at 10:15
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Get everything after the dash in a string in javascript
...parts = the_string.split('-', 2);
// After calling split(), 'parts' is an array with two elements:
// parts[0] is 'sometext'
// parts[1] is '20202'
var the_text = parts[0];
var the_num = parts[1];
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Microsoft Excel mangles Diacritics in .csv files?
... in my project when sending Microsoft Excel to user:
/**
* Export an array as downladable Excel CSV
* @param array $header
* @param array $data
* @param string $filename
*/
function toCSV($header, $data, $filename) {
$sep = "\t";
$eol = "\n";
$csv = count($he...
How to get the Display Name Attribute of an Enum member via MVC razor code?
...ould first test descriptionAttributes == null before you try to access the array: descriptionAttributes[0]. Otherwise you may raise an exception and the line below where you check for null will never be true.
– Robert S.
Jul 31 '17 at 14:59
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What is “overhead”?
...e the same size as a pointer, this means a 50% memory overhead, whereas an array can potentially have 0% overhead.
Method call overhead: A well-designed program is broken down into lots of short methods. But each method call requires setting up a stack frame, copying parameters and a return address....