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const differenceBetweenDates = (date1, date2) => Math.abs(Math.floor((date2 - date1) / (1000 * 60 * 60 * 24))); 

document.write(differenceBetweenDates("2773-01-17", "2774-01-18"));

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const objectToURLParams = (obj) => Object.entries(obj).map(([key, value]) => `${encodeURIComponent(key)}=${encodeURIComponent(value)}`).join('&'); 

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const secondsToHHMMSS = (seconds) => { 
  const hours = Math.floor(seconds / 3600); 
  const remainingSeconds = seconds % 3600; 
  const minutes = Math.floor(remainingSeconds / 60); 
  const remainingSecs = remainingSeconds % 60; 
  return `${hours}:${minutes}:${remainingSecs}`; 
}; 

document.write(secondsToHHMMSS(7320));

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const randomizeString = (str) => str.split('').sort(() => 0.5 - Math.random()).join(''); 

document.write(randomizeString("Every good boy deserves fudge!");

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const checkIsValidIPv4 = (ip) => /^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/.test(ip); 

document.write(checkIsValidIPv4("192.168.1.1"));

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const checkIsValidUSPhoneNumber = (phone) => /^(?:(?:\+1\s?)?(?:\(?\d{3}\)?[\s.-]?)?\d{3}[\s.-]?\d{4})$/.test(phone);

document.write(checkIsValidUSPhoneNumber("+1 (123) 456-7890"));

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const isMACAddressValid = (mac) => /^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$/.test(mac); 

document.write(isValidMACAddress("AA:22:FF:04:2D")); 

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const convertRGBToHSL = (r, g, b) => { 
  [r, g, b] = [r, g, b].map(val => val / 255); 
  const [max, min] = [Math.max(r, g, b), Math.min(r, g, b)]; 
  let h = (max !== min) ? ((max === r ? g - b : (max === g ? b - r : r - g)) / (max - min) + (max === g ? 2 : (max === b ? 4 : 0))) / 6 : 0; 
  let s = (max !== min) ? (l => l > 0.5 ? (max - min) / (2 - max - min) : (max - min) / (max + min))(l) : 0; 
  let l = (max + min) / 2; 
  return { h: Math.round(h * 360), s: Math.round(s * 100), l: Math.round(l * 100) }; 
}; 

document.write(convertRGBToHSL(77, 123, 44));

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$pwd = "C:\Users\someusername"
$dirinfo = Get-ChildItem($pwd) -recurse
$d = $dirinfo.ToString()
$stringAsStream = [System.IO.MemoryStream]::new()
$writer = [System.IO.StreamWriter]::new($stringAsStream)
$writer.write($d)
$writer.Flush()
$stringAsStream.Position = 0
$output = Get-FileHash -InputStream $stringAsStream | Select-Object Hash
$output.hash.ToString()

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function get_sum(int $n = 100) {
   $sum = $n * ($n + 1) / 2; 
   return $sum;
}