jaysonmulwa

<?php
/** See it live: https://onlinephp.io/c/551a0 **/


$helloWorld = [
	'ascii' => 'Hello, World!',
	'utf-8' => 'Hello, World!',
];

$spacePos = strpos($helloWorld['ascii'], ' ');

jaysonmulwa

# Source: https://stackoverflow.com/a/43317244
$path = ".\aws-ec2-key.pem"
# Reset to remove explict permissions
icacls.exe $path /reset
# Give current user explicit read-permission
icacls.exe $path /GRANT:R "$($env:USERNAME):(R)"
# Disable inheritance and remove inherited permissions
icacls.exe $path /inheritance:r

jaysonmulwa

/**
 * Calculate Shannon's entropy for a string
 */
module.exports = (str) => {
  const set = {};

  str.split('').forEach(
    c => (set[c] ? set[c]++ : (set[c] = 1))
  );