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Convert integer into its character equivalent, where 0 => a, 1 => b, etc
I want to convert an integer into its character equivalent based on the alphabet. For example:
12 Answers
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Remove duplicate values from JS array [duplicate]
... from the above).
Unique by...
Sometimes it's desired to uniquify a list based on some criteria other than just equality, for example, to filter out objects that are different, but share some property. This can be done elegantly by passing a callback. This "key" callback is applied to each element...
Read data from SqlDataReader
I have a SQL Server 2008 database and I am working on it in the backend. I am working on asp.net/C#
13 Answers
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Creating an API for mobile applications - Authentication and Authorization
...ing into different mechanisms for authentication and authorization for web-based APIs (by studying other implementations). I've got my head wrapped around most of the fundamental concepts but am still looking for guidance in a few areas. The last thing I want to do is reinvent the wheel, but I'm n...
How to return an empty ActiveRecord relation?
...t.none.
Neither it, nor chained methods, will generate queries to the database.
According to the comments:
The returned ActiveRecord::NullRelation inherits from
Relation and implements the Null Object pattern. It is an object with
defined null behavior and always returns an empty array of ...
Ways to iterate over a list in Java
... if you do it through the remove method of the iterator itself. With index-based iteration, you are free to modify the list in any way. However, adding or removing elements that come before the current index risks having your loop skipping elements or processing the same element multiple times; you ...
Android and setting width and height programmatically in dp units
...nteger pixels for use as a size. A
size conversion involves rounding the base value, and ensuring that a
non-zero base value is at least one pixel in size.
Yes it rounding the value but it's not very bad(just in odd values on hdpi and ldpi devices need to add a little value when ldpi is not ve...
Randomize a List
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Shuffle any (I)List with an extension method based on the Fisher-Yates shuffle:
private static Random rng = new Random();
public static void Shuffle<T>(this IList<T> list)
{
int n = list.Count;
while (n > 1) {
n--;
in...
Capture Signature using HTML5 and iPad
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Here's another canvas based version with variable width (based on drawing velocity) curves: demo at http://szimek.github.io/signature_pad and code at https://github.com/szimek/signature_pad.
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PHP Get all subdirectories of a given directory
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In Array:
function expandDirectoriesMatrix($base_dir, $level = 0) {
$directories = array();
foreach(scandir($base_dir) as $file) {
if($file == '.' || $file == '..') continue;
$dir = $base_dir.DIRECTORY_SEPARATOR.$file;
if(is_dir($dir)) {...