Gerald B. pilotgeraldb

😎

being awesome

I write code, I fly airplanes, and I know things...

pilotgeraldb / example_validator.cs

Created July 5, 2022 22:10

example_validator

	public class ModelValidator : AbstractValidator<Model> {
	public ModelValidator() {
	RuleFor(x => x.Surname).NotEmpty();
	RuleFor(x => x.Forename).NotEmpty().WithMessage("Please specify a first name");
	RuleFor(x => x.Discount).NotEqual(0).When(x => x.HasDiscount);
	RuleFor(x => x.Address).Length(20, 250);
	RuleFor(x => x.Postcode).Must(BeAValidPostcode).WithMessage("Please specify a valid postcode");
	}
	}

pilotgeraldb / extension method -- IList -- move

Last active June 23, 2016 18:28

allows to 'move' items in an IList object

	public static void Move<T>(this IList<T> list, int oldIndex, int newIndex)
	{
	var item = list[oldIndex];

	list.RemoveAt(oldIndex);

	if (newIndex > oldIndex)
	{
	newIndex--;
	}

pilotgeraldb / custom config reader

Created June 21, 2016 14:21

deserializes a section in the config file

	public abstract class XmlDeserializeConfigSectionHandler : IConfigurationSectionHandler
	{
	public XmlDeserializeConfigSectionHandler() : base()
	{

	}

	public object Create(object parent, object configContext, System.Xml.XmlNode section)
	{
	Type t = this.GetType();

pilotgeraldb / hash file

Last active June 6, 2016 20:22

creates a hash of a file from a filename

	using (MD5 md5 = MD5.Create())
	{
	using (FileStream stream = File.OpenRead(filename))
	{
	byte[] bytes = md5.ComputeHash(stream);
	bool uppercase = false;

	StringBuilder result = new StringBuilder(bytes.Length * 2);

	for (int i = 0; i < bytes.Length; i++)

pilotgeraldb / split enumerable into groups of n

Created June 1, 2016 14:07

splits an ienumerable into groups of count n

	public static IEnumerable<IEnumerable<T>> Split<T>(this IEnumerable<T> source, int countPerList)
	{
	if (source == null \|\| countPerList <= 0)
	{
	return Enumerable.Empty<IEnumerable<T>>();
	}

	return source
	.Select((x, i) => new { Index = i, Value = x })
	.GroupBy(x => x.Index / countPerList)

pilotgeraldb / sqrt

Last active May 31, 2016 19:57

a javascript implementation using a taylor series to approximate the square root of a number (my own original work)

	function squareRoot(value, precision)
	{
	function calcSeedVal(value, precision)
	{
	var a = 0;
	var result = 0;

	if(value > 9)
	{
	a = value / Math.pow(10,precision);

pilotgeraldb / MSSQL -- table metadata

Created May 11, 2016 15:28

retrieves table information in mssql

	DECLARE @tablename varchar(50)
	SET @tablename = '' -- <--EDIT THIS VALUE

	DECLARE @columnname varchar(50)
	SET @columnname = '' -- <--EDIT THIS VALUE

	SELECT
	SCHEMANAME = SCHEMA_NAME(SYSTABLES.SCHEMA_ID),
	TABLENAME = SYSTABLES.NAME,
	COLUMNNAME = _SYSCOLUMNS.NAME,

pilotgeraldb / string prototypes

Created May 10, 2016 16:46

javascript, utility string prototypes

	String.prototype.startsWith = function(str)
	{
	return (this.indexOf(str) === 0);
	};

	String.prototype.contains = function(str)
	{
	return (this.indexOf(str, 0) !== -1);
	};

pilotgeraldb / PsudeoGUID

Created May 10, 2016 14:44

javascript, a function for creating psuedo guid-like strings.

	function guid()
	{
	var guidTemplate = 'xxxxxxxxxxxx4xxxyxxxxxxxxxxxxxxx';

	var guid = guidTemplate.replace(/[xy]/g, function (c)
	{
	var r = Math.random() * 16 \| 0;
	var v = c == 'x' ? r : (r & 0x3 \| 0x8);
	return v.toString(16);
	});

pilotgeraldb / MouseWheelEventHandler

Last active May 10, 2016 14:55

javascript cross browser mouse wheel event registration

	if (window.addEventListener)
	{
	// IE9, Chrome, Safari, Opera
	window.addEventListener("mousewheel", function (e)
	{
	someEventHandler(e);
	}, false);
	// Firefox
	window.addEventListener("DOMMouseScroll", function (e)
	{